51638596 has 9 divisors (see below), whose sum is σ = 90392701. Its totient is φ = 25812112.

The previous prime is 51638593. The next prime is 51638603. The reversal of 51638596 is 69583615.

The square root of 51638596 is 7186.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 16402500 + 35236096 = 4050^2 + 5936^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51638593) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 12576 + ... + 16168.

Almost surely, 2^51638596 is an apocalyptic number.

51638596 is the 7186-th square number.

It is an amenable number.

51638596 is a deficient number, since it is larger than the sum of its proper divisors (38754105).

51638596 is an frugal number, since it uses more digits than its factorization.

51638596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7190 (or 3595 counting only the distinct ones).

The product of its digits is 194400, while the sum is 43.

The cubic root of 51638596 is about 372.3843966599.

The spelling of 51638596 in words is "fifty-one million, six hundred thirty-eight thousand, five hundred ninety-six".