51164512 has 48 divisors (see below), whose sum is σ = 120137472. Its totient is φ = 20972160.

The previous prime is 51164471. The next prime is 51164521. The reversal of 51164512 is 21546115.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 187 + ... + 10117.

It is an arithmetic number, because the mean of its divisors is an integer number (2502864).

Almost surely, 2^51164512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51164512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60068736).

51164512 is an abundant number, since it is smaller than the sum of its proper divisors (68972960).

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

51164512 is a wasteful number, since it uses less digits than its factorization.

51164512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9971 (or 9963 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 51164512 is about 7152.9372987606. The cubic root of 51164512 is about 371.2412948262.

The spelling of 51164512 in words is "fifty-one million, one hundred sixty-four thousand, five hundred twelve".