52205820 has 24 divisors (see below), whose sum is σ = 146176464. Its totient is φ = 13921536.

The previous prime is 52205801. The next prime is 52205843. The reversal of 52205820 is 2850225.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434989 + ... + 435108.

It is an arithmetic number, because the mean of its divisors is an integer number (6090686).

Almost surely, 2^52205820 is an apocalyptic number.

It is an amenable number.

52205820 is an abundant number, since it is smaller than the sum of its proper divisors (93970644).

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

52205820 is a wasteful number, since it uses less digits than its factorization.

52205820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870109 (or 870107 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 52205820 is about 7225.3595066266. The cubic root of 52205820 is about 373.7429195946.

The spelling of 52205820 in words is "fifty-two million, two hundred five thousand, eight hundred twenty".