51630764 has 12 divisors (see below), whose sum is σ = 90560904. Its totient is φ = 25756224.

The previous prime is 51630763. The next prime is 51630773. The reversal of 51630764 is 46703615.

51630764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×51630764⁴ (a number of 32 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51630764.

It is not an unprimeable number, because it can be changed into a prime (51630763) 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 3 ways as a sum of consecutive naturals, for example, 12797 + ... + 16340.

It is an arithmetic number, because the mean of its divisors is an integer number (7546742).

Almost surely, 2^51630764 is an apocalyptic number.

It is an amenable number.

51630764 is a deficient number, since it is larger than the sum of its proper divisors (38930140).

51630764 is a wasteful number, since it uses less digits than its factorization.

51630764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29584 (or 29582 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 51630764 is about 7185.4550308244. The cubic root of 51630764 is about 372.3655692564.

The spelling of 51630764 in words is "fifty-one million, six hundred thirty thousand, seven hundred sixty-four".