557121081 has 16 divisors (see below), whose sum is σ = 811090368. Its totient is φ = 337344000.

The previous prime is 557121067. The next prime is 557121083. The reversal of 557121081 is 180121755.

It is not a de Polignac number, because 557121081 - 2⁶ = 557121017 is a prime.

It is a super-2 number, since 2×557121081² = 620767797789217122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (557121083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32605 + ... + 46661.

It is an arithmetic number, because the mean of its divisors is an integer number (50693148).

Almost surely, 2^557121081 is an apocalyptic number.

It is an amenable number.

557121081 is a deficient number, since it is larger than the sum of its proper divisors (253969287).

557121081 is a wasteful number, since it uses less digits than its factorization.

557121081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15272.

The product of its (nonzero) digits is 2800, while the sum is 30.

The square root of 557121081 is about 23603.4124863334. The cubic root of 557121081 is about 822.8421508038.

The spelling of 557121081 in words is "five hundred fifty-seven million, one hundred twenty-one thousand, eighty-one".