51293772 has 36 divisors (see below), whose sum is σ = 135298800. Its totient is φ = 16354272.

The previous prime is 51293719. The next prime is 51293783. The reversal of 51293772 is 27739215.

51293772 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 an unprimeable number.

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, 30147 + ... + 31802.

It is an arithmetic number, because the mean of its divisors is an integer number (3758300).

Almost surely, 2^51293772 is an apocalyptic number.

It is an amenable number.

51293772 is an abundant number, since it is smaller than the sum of its proper divisors (84005028).

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

51293772 is a wasteful number, since it uses less digits than its factorization.

51293772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61982 (or 61977 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 51293772 is about 7161.9670482347. The cubic root of 51293772 is about 371.5536616992.

The spelling of 51293772 in words is "fifty-one million, two hundred ninety-three thousand, seven hundred seventy-two".