557644890 has 64 divisors (see below), whose sum is σ = 1523515392. Its totient is φ = 129307200.

The previous prime is 557644873. The next prime is 557644933. The reversal of 557644890 is 98446755.

It is a super-2 number, since 2×557644890² = 621935646686224200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29146 + ... + 44325.

It is an arithmetic number, because the mean of its divisors is an integer number (23804928).

Almost surely, 2^557644890 is an apocalyptic number.

557644890 is an abundant number, since it is smaller than the sum of its proper divisors (965870502).

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

557644890 is a wasteful number, since it uses less digits than its factorization.

557644890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73515.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The square root of 557644890 is about 23614.5059232667. The cubic root of 557644890 is about 823.0999506067.

The spelling of 557644890 in words is "five hundred fifty-seven million, six hundred forty-four thousand, eight hundred ninety".