57872802521 has 2 divisors, whose sum is σ = 57872802522. Its totient is φ = 57872802520.

The previous prime is 57872802511. The next prime is 57872802553. The reversal of 57872802521 is 12520827875.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57665298496 + 207504025 = 240136^2 + 14405^2 .

It is a cyclic number.

It is not a de Polignac number, because 57872802521 - 2¹⁴ = 57872786137 is a prime.

It is a super-2 number, since 2×57872802521² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (57872802511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28936401260 + 28936401261.

It is an arithmetic number, because the mean of its divisors is an integer number (28936401261).

Almost surely, 2^57872802521 is an apocalyptic number.

It is an amenable number.

57872802521 is a deficient number, since it is larger than the sum of its proper divisors (1).

57872802521 is an equidigital number, since it uses as much as digits as its factorization.

57872802521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 627200, while the sum is 47.

The spelling of 57872802521 in words is "fifty-seven billion, eight hundred seventy-two million, eight hundred two thousand, five hundred twenty-one".