51292664 has 16 divisors (see below), whose sum is σ = 96293400. Its totient is φ = 25614432.

The previous prime is 51292649. The next prime is 51292667. The reversal of 51292664 is 46629215.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51292667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3722 + ... + 10790.

Almost surely, 2^51292664 is an apocalyptic number.

It is an amenable number.

51292664 is a deficient number, since it is larger than the sum of its proper divisors (45000736).

51292664 is a wasteful number, since it uses less digits than its factorization.

51292664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7982 (or 7978 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 51292664 is about 7161.8896947663. The cubic root of 51292664 is about 371.5509863620.

The spelling of 51292664 in words is "fifty-one million, two hundred ninety-two thousand, six hundred sixty-four".