557907345 has 56 divisors (see below), whose sum is σ = 1009276200. Its totient is φ = 295923456.

The previous prime is 557907323. The next prime is 557907359. The reversal of 557907345 is 543709755.

557907345 is a `hidden beast` number, since 5 + 579 + 0 + 73 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8661249 + 549246096 = 2943^2 + 23436^2 .

It is not a de Polignac number, because 557907345 - 2¹⁸ = 557645201 is a prime.

It is a super-2 number, since 2×557907345² = 622521211209898050, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 557907345.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 980221 + ... + 980789.

Almost surely, 2^557907345 is an apocalyptic number.

It is an amenable number.

557907345 is a deficient number, since it is larger than the sum of its proper divisors (451368855).

557907345 is an equidigital number, since it uses as much as digits as its factorization.

557907345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 661500, while the sum is 45.

The square root of 557907345 is about 23620.0623411540. The cubic root of 557907345 is about 823.2290607383.

The spelling of 557907345 in words is "five hundred fifty-seven million, nine hundred seven thousand, three hundred forty-five".