557550920 has 32 divisors (see below), whose sum is σ = 1259177400. Its totient is φ = 222187008.

The previous prime is 557550893. The next prime is 557550947. The reversal of 557550920 is 29055755.

It is an interprime number because it is at equal distance from previous prime (557550893) and next prime (557550947).

It can be written as a sum of positive squares in 4 ways, for example, as 274167364 + 283383556 = 16558^2 + 16834^2 .

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 7 ways as a sum of consecutive naturals, for example, 15149 + ... + 36668.

Almost surely, 2^557550920 is an apocalyptic number.

It is an amenable number.

557550920 is an abundant number, since it is smaller than the sum of its proper divisors (701626480).

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

557550920 is a wasteful number, since it uses less digits than its factorization.

557550920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52097 (or 52093 counting only the distinct ones).

The product of its (nonzero) digits is 78750, while the sum is 38.

The square root of 557550920 is about 23612.5161725725. The cubic root of 557550920 is about 823.0537138655.

The spelling of 557550920 in words is "five hundred fifty-seven million, five hundred fifty thousand, nine hundred twenty".