51295764 has 48 divisors (see below), whose sum is σ = 132395648. Its totient is φ = 15355008.

The previous prime is 51295729. The next prime is 51295787. The reversal of 51295764 is 46759215.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1329 + ... + 10215.

Almost surely, 2^51295764 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 51295764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66197824).

51295764 is an abundant number, since it is smaller than the sum of its proper divisors (81099884).

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

51295764 is a wasteful number, since it uses less digits than its factorization.

51295764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8944 (or 8942 counting only the distinct ones).

The product of its digits is 75600, while the sum is 39.

The square root of 51295764 is about 7162.1061148240. The cubic root of 51295764 is about 371.5584714145.

The spelling of 51295764 in words is "fifty-one million, two hundred ninety-five thousand, seven hundred sixty-four".