52722187 has 32 divisors (see below), whose sum is σ = 66124800. Its totient is φ = 41912640.

The previous prime is 52722167. The next prime is 52722193. The reversal of 52722187 is 78122725.

It is not a de Polignac number, because 52722187 - 2²³ = 44333579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52722167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323368 + ... + 323530.

It is an arithmetic number, because the mean of its divisors is an integer number (2066400).

Almost surely, 2^52722187 is an apocalyptic number.

52722187 is a deficient number, since it is larger than the sum of its proper divisors (13402613).

52722187 is a wasteful number, since it uses less digits than its factorization.

52722187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 234 counting only the distinct ones).

The product of its digits is 15680, while the sum is 34.

The square root of 52722187 is about 7261.0045448271. The cubic root of 52722187 is about 374.9711076999.

The spelling of 52722187 in words is "fifty-two million, seven hundred twenty-two thousand, one hundred eighty-seven".