52178820 has 48 divisors (see below), whose sum is σ = 146444928. Its totient is φ = 13881600.

The previous prime is 52178813. The next prime is 52178821. The reversal of 52178820 is 2887125.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (52178821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35337 + ... + 36783.

It is an arithmetic number, because the mean of its divisors is an integer number (3050936).

Almost surely, 2^52178820 is an apocalyptic number.

It is an amenable number.

52178820 is an abundant number, since it is smaller than the sum of its proper divisors (94266108).

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

52178820 is a wasteful number, since it uses less digits than its factorization.

52178820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060 (or 2058 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 52178820 is about 7223.4908458445. The cubic root of 52178820 is about 373.6784772331.

The spelling of 52178820 in words is "fifty-two million, one hundred seventy-eight thousand, eight hundred twenty".