52156820 has 24 divisors (see below), whose sum is σ = 111166944. Its totient is φ = 20550816.

The previous prime is 52156781. The next prime is 52156837. The reversal of 52156820 is 2865125.

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, 18122 + ... + 20801.

It is an arithmetic number, because the mean of its divisors is an integer number (4631956).

Almost surely, 2^52156820 is an apocalyptic number.

It is an amenable number.

52156820 is an abundant number, since it is smaller than the sum of its proper divisors (59010124).

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

52156820 is a wasteful number, since it uses less digits than its factorization.

52156820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38999 (or 38997 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 52156820 is about 7221.9678758632. The cubic root of 52156820 is about 373.6259522037.

The spelling of 52156820 in words is "fifty-two million, one hundred fifty-six thousand, eight hundred twenty".