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551075625 = 32543132
BaseRepresentation
bin100000110110001…
…011111100101001
31102101221112122100
4200312023330221
52112033410000
6130403244013
716441031322
oct4066137451
91371845570
10551075625
11263082301
12134679609
138a228c69
145328d449
15335a6a00
hex20d8bf29

551075625 has 45 divisors (see below), whose sum is σ = 997867299. Its totient is φ = 292968000.

The previous prime is 551075617. The next prime is 551075633. The reversal of 551075625 is 526570155.

Multipling 551075625 by its sum of digits (36), we get a square (19838722500 = 1408502).

It is a happy number.

The square root of 551075625 is 23475.

It is a perfect power (a square), and thus also a powerful number.

551075625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (551075617) and next prime (551075633).

It can be written as a sum of positive squares in 7 ways, for example, as 528494121 + 22581504 = 22989^2 + 4752^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 551075625 - 23 = 551075617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551075625.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1760469 + ... + 1760781.

Almost surely, 2551075625 is an apocalyptic number.

551075625 is the 23475-th square number.

551075625 is the 11738-th centered octagonal number.

It is an amenable number.

551075625 is a deficient number, since it is larger than the sum of its proper divisors (446791674).

551075625 is an frugal number, since it uses more digits than its factorization.

551075625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 36.

The cubic root of 551075625 is about 819.8550333657.

The spelling of 551075625 in words is "five hundred fifty-one million, seventy-five thousand, six hundred twenty-five".

Divisors: 1 3 5 9 15 25 45 75 125 225 313 375 625 939 1125 1565 1875 2817 4695 5625 7825 14085 23475 39125 70425 97969 117375 195625 293907 352125 489845 586875 881721 1469535 1760625 2449225 4408605 7347675 12246125 22043025 36738375 61230625 110215125 183691875 551075625