57079874221 has 2 divisors, whose sum is σ = 57079874222. Its totient is φ = 57079874220.

The previous prime is 57079874213. The next prime is 57079874251. The reversal of 57079874221 is 12247897075.

57079874221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30761301321 + 26318572900 = 175389^2 + 162230^2 .

It is a cyclic number.

It is not a de Polignac number, because 57079874221 - 2³ = 57079874213 is a prime.

It is a super-2 number, since 2×57079874221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57079874251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28539937110 + 28539937111.

It is an arithmetic number, because the mean of its divisors is an integer number (28539937111).

Almost surely, 2^57079874221 is an apocalyptic number.

It is an amenable number.

57079874221 is a deficient number, since it is larger than the sum of its proper divisors (1).

57079874221 is an equidigital number, since it uses as much as digits as its factorization.

57079874221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975680, while the sum is 52.

The spelling of 57079874221 in words is "fifty-seven billion, seventy-nine million, eight hundred seventy-four thousand, two hundred twenty-one".