57221757427 has 16 divisors (see below), whose sum is σ = 61538886432. Its totient is φ = 53011537920.

The previous prime is 57221757419. The next prime is 57221757449. The reversal of 57221757427 is 72475712275.

It is not a de Polignac number, because 57221757427 - 2³ = 57221757419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57221757457) 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, 1531723 + ... + 1568635.

It is an arithmetic number, because the mean of its divisors is an integer number (3846180402).

Almost surely, 2^57221757427 is an apocalyptic number.

57221757427 is a deficient number, since it is larger than the sum of its proper divisors (4317129005).

57221757427 is a wasteful number, since it uses less digits than its factorization.

57221757427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38358.

The product of its digits is 1920800, while the sum is 49.

The spelling of 57221757427 in words is "fifty-seven billion, two hundred twenty-one million, seven hundred fifty-seven thousand, four hundred twenty-seven".