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553031305 = 5293814009
BaseRepresentation
bin100000111101101…
…001011010001001
31102112121220022221
4200331221122021
52113034000210
6130513214041
716463455111
oct4075513211
91375556287
10553031305
11264198672
12135261321
138a762178
145363c041
15338411da
hex20f69689

553031305 has 8 divisors (see below), whose sum is σ = 686521800. Its totient is φ = 427168896.

The previous prime is 553031293. The next prime is 553031317. The reversal of 553031305 is 503130355.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (553031293) and next prime (553031317).

It can be written as a sum of positive squares in 4 ways, for example, as 14930496 + 538100809 = 3864^2 + 23197^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 553031305 - 25 = 553031273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 553031305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1906860 + ... + 1907149.

It is an arithmetic number, because the mean of its divisors is an integer number (85815225).

Almost surely, 2553031305 is an apocalyptic number.

It is an amenable number.

553031305 is a deficient number, since it is larger than the sum of its proper divisors (133490495).

553031305 is a wasteful number, since it uses less digits than its factorization.

553031305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3814043.

The product of its (nonzero) digits is 3375, while the sum is 25.

The square root of 553031305 is about 23516.6176351958. The cubic root of 553031305 is about 820.8237335119.

The spelling of 553031305 in words is "five hundred fifty-three million, thirty-one thousand, three hundred five".

Divisors: 1 5 29 145 3814009 19070045 110606261 553031305