557691036 has 96 divisors (see below), whose sum is σ = 1525235712. Its totient is φ = 155312640.

The previous prime is 557691031. The next prime is 557691053. The reversal of 557691036 is 630196755.

It is a happy number.

It is a super-2 number, since 2×557691036² = 622038583269506592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557691031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 650320 + ... + 651176.

It is an arithmetic number, because the mean of its divisors is an integer number (15887872).

Almost surely, 2^557691036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 557691036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (762617856).

557691036 is an abundant number, since it is smaller than the sum of its proper divisors (967544676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

557691036 is a wasteful number, since it uses less digits than its factorization.

557691036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059 (or 1057 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 42.

The square root of 557691036 is about 23615.4829719826. The cubic root of 557691036 is about 823.1226542563.

The spelling of 557691036 in words is "five hundred fifty-seven million, six hundred ninety-one thousand, thirty-six".