52185220 has 12 divisors (see below), whose sum is σ = 109589004. Its totient is φ = 20874080.

The previous prime is 52185209. The next prime is 52185233. The reversal of 52185220 is 2258125.

It can be written as a sum of positive squares in 2 ways, for example, as 38167684 + 14017536 = 6178^2 + 3744^2 .

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, 1304611 + ... + 1304650.

It is an arithmetic number, because the mean of its divisors is an integer number (9132417).

Almost surely, 2^52185220 is an apocalyptic number.

It is an amenable number.

52185220 is an abundant number, since it is smaller than the sum of its proper divisors (57403784).

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

52185220 is a wasteful number, since it uses less digits than its factorization.

52185220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2609270 (or 2609268 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 52185220 is about 7223.9338313692. The cubic root of 52185220 is about 373.6937544694.

The spelling of 52185220 in words is "fifty-two million, one hundred eighty-five thousand, two hundred twenty".