557189520 has 40 divisors (see below), whose sum is σ = 1727288256. Its totient is φ = 148583808.

The previous prime is 557189489. The next prime is 557189527. The reversal of 557189520 is 25981755.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×557189520² = 620920322395660800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (557189527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1160572 + ... + 1161051.

Almost surely, 2^557189520 is an apocalyptic number.

It is an amenable number.

557189520 is an abundant number, since it is smaller than the sum of its proper divisors (1170098736).

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

557189520 is a wasteful number, since it uses less digits than its factorization.

557189520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321639 (or 2321633 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 42.

The square root of 557189520 is about 23604.8622109937. The cubic root of 557189520 is about 822.8758431734.

The spelling of 557189520 in words is "five hundred fifty-seven million, one hundred eighty-nine thousand, five hundred twenty".