51336972 has 36 divisors (see below), whose sum is σ = 132533856. Its totient is φ = 16747680.

The previous prime is 51336953. The next prime is 51336973. The reversal of 51336972 is 27963315.

51336972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (51336973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13479 + ... + 16862.

It is an arithmetic number, because the mean of its divisors is an integer number (3681496).

Almost surely, 2^51336972 is an apocalyptic number.

It is an amenable number.

51336972 is an abundant number, since it is smaller than the sum of its proper divisors (81196884).

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

51336972 is a wasteful number, since it uses less digits than its factorization.

51336972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30398 (or 30393 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 51336972 is about 7164.9823447096. The cubic root of 51336972 is about 371.6579408579.

The spelling of 51336972 in words is "fifty-one million, three hundred thirty-six thousand, nine hundred seventy-two".