51972036 has 48 divisors (see below), whose sum is σ = 126787584. Its totient is φ = 16553376.

The previous prime is 51972017. The next prime is 51972073. The reversal of 51972036 is 63027915.

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 a junction number, because it is equal to n+sod(n) for n = 51971988 and 51972006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23181 + ... + 25323.

It is an arithmetic number, because the mean of its divisors is an integer number (2641408).

Almost surely, 2^51972036 is an apocalyptic number.

It is an amenable number.

51972036 is an abundant number, since it is smaller than the sum of its proper divisors (74815548).

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

51972036 is a wasteful number, since it uses less digits than its factorization.

51972036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240 (or 2238 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 51972036 is about 7209.1633356444. The cubic root of 51972036 is about 373.1841960294.

The spelling of 51972036 in words is "fifty-one million, nine hundred seventy-two thousand, thirty-six".