52166720 has 28 divisors (see below), whose sum is σ = 124222764. Its totient is φ = 20866560.

The previous prime is 52166711. The next prime is 52166743. The reversal of 52166720 is 2766125.

It can be written as a sum of positive squares in 2 ways, for example, as 5271616 + 46895104 = 2296^2 + 6848^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81191 + ... + 81830.

Almost surely, 2^52166720 is an apocalyptic number.

It is an amenable number.

52166720 is an abundant number, since it is smaller than the sum of its proper divisors (72056044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52166720 is a wasteful number, since it uses less digits than its factorization.

52166720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163038 (or 163028 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 52166720 is about 7222.6532520951. The cubic root of 52166720 is about 373.6495902944.

The spelling of 52166720 in words is "fifty-two million, one hundred sixty-six thousand, seven hundred twenty".