52521236 has 18 divisors (see below), whose sum is σ = 96085962. Its totient is φ = 25117840.

The previous prime is 52521221. The next prime is 52521257. The reversal of 52521236 is 63212525.

It can be written as a sum of positive squares in only one way, i.e., 35760400 + 16760836 = 5980^2 + 4094^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10295 + ... + 14526.

It is an arithmetic number, because the mean of its divisors is an integer number (5338109).

Almost surely, 2^52521236 is an apocalyptic number.

It is an amenable number.

52521236 is a deficient number, since it is larger than the sum of its proper divisors (43564726).

52521236 is a wasteful number, since it uses less digits than its factorization.

52521236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24871 (or 24846 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 52521236 is about 7247.1536481573. The cubic root of 52521236 is about 374.4940994422.

The spelling of 52521236 in words is "fifty-two million, five hundred twenty-one thousand, two hundred thirty-six".