51764522 has 4 divisors (see below), whose sum is σ = 77646786. Its totient is φ = 25882260.

The previous prime is 51764497. The next prime is 51764533. The reversal of 51764522 is 22546715.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22546715 = 5 ⋅4509343.

It can be written as a sum of positive squares in only one way, i.e., 42758521 + 9006001 = 6539^2 + 3001^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12941129 + ... + 12941132.

Almost surely, 2^51764522 is an apocalyptic number.

51764522 is a deficient number, since it is larger than the sum of its proper divisors (25882264).

51764522 is a wasteful number, since it uses less digits than its factorization.

51764522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25882263.

The product of its digits is 16800, while the sum is 32.

The square root of 51764522 is about 7194.7565629422. The cubic root of 51764522 is about 372.6868500896.

The spelling of 51764522 in words is "fifty-one million, seven hundred sixty-four thousand, five hundred twenty-two".