52011820 has 24 divisors (see below), whose sum is σ = 124828704. Its totient is φ = 17832576.

The previous prime is 52011803. The next prime is 52011853. The reversal of 52011820 is 2811025.

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, 185617 + ... + 185896.

It is an arithmetic number, because the mean of its divisors is an integer number (5201196).

Almost surely, 2^52011820 is an apocalyptic number.

It is an amenable number.

52011820 is an abundant number, since it is smaller than the sum of its proper divisors (72816884).

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

52011820 is a wasteful number, since it uses less digits than its factorization.

52011820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371529 (or 371527 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 52011820 is about 7211.9220738996. The cubic root of 52011820 is about 373.2793944891.

Adding to 52011820 its reverse (2811025), we get a palindrome (54822845).

It can be divided in two parts, 5201 and 1820, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 52011820 in words is "fifty-two million, eleven thousand, eight hundred twenty".