51764164 has 6 divisors (see below), whose sum is σ = 90587294. Its totient is φ = 25882080.

The previous prime is 51764143. The next prime is 51764179. The reversal of 51764164 is 46146715.

It can be written as a sum of positive squares in only one way, i.e., 42510400 + 9253764 = 6520^2 + 3042^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6470517 + ... + 6470524.

Almost surely, 2^51764164 is an apocalyptic number.

It is an amenable number.

51764164 is a deficient number, since it is larger than the sum of its proper divisors (38823130).

51764164 is a wasteful number, since it uses less digits than its factorization.

51764164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12941045 (or 12941043 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 51764164 is about 7194.7316836697. The cubic root of 51764164 is about 372.6859909285.

The spelling of 51764164 in words is "fifty-one million, seven hundred sixty-four thousand, one hundred sixty-four".