51656284 has 12 divisors (see below), whose sum is σ = 90550264. Its totient is φ = 25784784.

The previous prime is 51656281. The next prime is 51656309. The reversal of 51656284 is 48265615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51656281) 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, 8082 + ... + 12985.

Almost surely, 2^51656284 is an apocalyptic number.

It is an amenable number.

51656284 is a deficient number, since it is larger than the sum of its proper divisors (38893980).

51656284 is a wasteful number, since it uses less digits than its factorization.

51656284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21684 (or 21682 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The square root of 51656284 is about 7187.2306210390. The cubic root of 51656284 is about 372.4269099723.

It can be divided in two parts, 5165 and 6284, that added together give a square (11449 = 107²).

The spelling of 51656284 in words is "fifty-one million, six hundred fifty-six thousand, two hundred eighty-four".