52872921 has 6 divisors (see below), whose sum is σ = 76372010. Its totient is φ = 35248608.

The previous prime is 52872863. The next prime is 52872923. The reversal of 52872921 is 12927825.

It can be written as a sum of positive squares in only one way, i.e., 51322896 + 1550025 = 7164^2 + 1245^2 .

It is not a de Polignac number, because 52872921 - 2¹⁸ = 52610777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52872923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2937376 + ... + 2937393.

Almost surely, 2^52872921 is an apocalyptic number.

It is an amenable number.

52872921 is a deficient number, since it is larger than the sum of its proper divisors (23499089).

52872921 is a wasteful number, since it uses less digits than its factorization.

52872921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5874775 (or 5874772 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 52872921 is about 7271.3768297345. The cubic root of 52872921 is about 375.3281181522.

The spelling of 52872921 in words is "fifty-two million, eight hundred seventy-two thousand, nine hundred twenty-one".