51896564 has 12 divisors (see below), whose sum is σ = 91027104. Its totient is φ = 25888824.

The previous prime is 51896561. The next prime is 51896587. The reversal of 51896564 is 46569815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51896561) 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, 12872 + ... + 16415.

It is an arithmetic number, because the mean of its divisors is an integer number (7585592).

Almost surely, 2^51896564 is an apocalyptic number.

It is an amenable number.

51896564 is a deficient number, since it is larger than the sum of its proper divisors (39130540).

51896564 is a wasteful number, since it uses less digits than its factorization.

51896564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29734 (or 29732 counting only the distinct ones).

The product of its digits is 259200, while the sum is 44.

The square root of 51896564 is about 7203.9269846383. The cubic root of 51896564 is about 373.0034667744.

The spelling of 51896564 in words is "fifty-one million, eight hundred ninety-six thousand, five hundred sixty-four".