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551241457 = 1342403189
BaseRepresentation
bin100000110110110…
…100011011110001
31102102020222010021
4200312310123301
52112104211312
6130411003441
716442321644
oct4066643361
91372228107
10551241457
11263185958
12134739581
138a2865a0
14532d3a5b
15335dac07
hex20db46f1

551241457 has 4 divisors (see below), whose sum is σ = 593644660. Its totient is φ = 508838256.

The previous prime is 551241451. The next prime is 551241461. The reversal of 551241457 is 754142155.

551241457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 311487201 + 239754256 = 17649^2 + 15484^2 .

It is a cyclic number.

It is not a de Polignac number, because 551241457 - 27 = 551241329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551241451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21201582 + ... + 21201607.

It is an arithmetic number, because the mean of its divisors is an integer number (148411165).

Almost surely, 2551241457 is an apocalyptic number.

It is an amenable number.

551241457 is a deficient number, since it is larger than the sum of its proper divisors (42403203).

551241457 is a wasteful number, since it uses less digits than its factorization.

551241457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42403202.

The product of its digits is 28000, while the sum is 34.

The square root of 551241457 is about 23478.5318322931. The cubic root of 551241457 is about 819.9372631955.

The spelling of 551241457 in words is "five hundred fifty-one million, two hundred forty-one thousand, four hundred fifty-seven".

Divisors: 1 13 42403189 551241457