557903385 has 24 divisors (see below), whose sum is σ = 1041420744. Its totient is φ = 274659840.

The previous prime is 557903383. The next prime is 557903393. The reversal of 557903385 is 583309755.

557903385 is a `hidden beast` number, since 557 + 90 + 3 + 3 + 8 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3583449 + 554319936 = 1893^2 + 23544^2 .

It is not a de Polignac number, because 557903385 - 2¹ = 557903383 is a prime.

It is a super-2 number, since 2×557903385² = 622512373988916450, which contains 22 as substring.

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 557903385.

It is not an unprimeable number, because it can be changed into a prime (557903383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 476256 + ... + 477425.

It is an arithmetic number, because the mean of its divisors is an integer number (43392531).

Almost surely, 2^557903385 is an apocalyptic number.

It is an amenable number.

557903385 is a deficient number, since it is larger than the sum of its proper divisors (483517359).

557903385 is a wasteful number, since it uses less digits than its factorization.

557903385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953705 (or 953702 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 45.

The square root of 557903385 is about 23619.9785139614. The cubic root of 557903385 is about 823.2271129867.

The spelling of 557903385 in words is "five hundred fifty-seven million, nine hundred three thousand, three hundred eighty-five".