557878431 has 48 divisors (see below), whose sum is σ = 854848512. Its totient is φ = 320745600.

The previous prime is 557878417. The next prime is 557878439. The reversal of 557878431 is 134878755.

It is a happy number.

It is not a de Polignac number, because 557878431 - 2¹¹ = 557876383 is a prime.

It is a super-2 number, since 2×557878431² = 622456687550043522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557878439) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2501586 + ... + 2501808.

It is an arithmetic number, because the mean of its divisors is an integer number (17809344).

Almost surely, 2^557878431 is an apocalyptic number.

557878431 is a deficient number, since it is larger than the sum of its proper divisors (296970081).

557878431 is a wasteful number, since it uses less digits than its factorization.

557878431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 321 counting only the distinct ones).

The product of its digits is 940800, while the sum is 48.

The square root of 557878431 is about 23619.4502687933. The cubic root of 557878431 is about 823.2148389884.

The spelling of 557878431 in words is "five hundred fifty-seven million, eight hundred seventy-eight thousand, four hundred thirty-one".