557060021 has 16 divisors (see below), whose sum is σ = 643851264. Its totient is φ = 472103424.

The previous prime is 557060017. The next prime is 557060033. The reversal of 557060021 is 120060755.

It is a cyclic number.

It is not a de Polignac number, because 557060021 - 2² = 557060017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557060041) 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, 243941 + ... + 246213.

It is an arithmetic number, because the mean of its divisors is an integer number (40240704).

Almost surely, 2^557060021 is an apocalyptic number.

It is an amenable number.

557060021 is a deficient number, since it is larger than the sum of its proper divisors (86791243).

557060021 is a wasteful number, since it uses less digits than its factorization.

557060021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 557060021 is about 23602.1189938531. The cubic root of 557060021 is about 822.8120887706.

The spelling of 557060021 in words is "five hundred fifty-seven million, sixty thousand, twenty-one".