52970879251721 has 4 divisors (see below), whose sum is σ = 53084307259152. Its totient is φ = 52857451244292.

The previous prime is 52970879251711. The next prime is 52970879251739. The reversal of 52970879251721 is 12715297807925.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52970879251721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52970879251711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56714003015 + ... + 56714003948.

It is an arithmetic number, because the mean of its divisors is an integer number (13271076814788).

Almost surely, 2^{52970879251721} is an apocalyptic number.

It is an amenable number.

52970879251721 is a deficient number, since it is larger than the sum of its proper divisors (113428007431).

52970879251721 is a wasteful number, since it uses less digits than its factorization.

52970879251721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113428007430.

The product of its (nonzero) digits is 44452800, while the sum is 65.

The spelling of 52970879251721 in words is "fifty-two trillion, nine hundred seventy billion, eight hundred seventy-nine million, two hundred fifty-one thousand, seven hundred twenty-one".