51616056 has 32 divisors (see below), whose sum is σ = 133491600. Its totient is φ = 16611840.

The previous prime is 51616043. The next prime is 51616057. The reversal of 51616056 is 65061615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51616057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36385 + ... + 37776.

Almost surely, 2^51616056 is an apocalyptic number.

It is an amenable number.

51616056 is an abundant number, since it is smaller than the sum of its proper divisors (81875544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51616056 is a wasteful number, since it uses less digits than its factorization.

51616056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74199 (or 74195 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 51616056 is about 7184.4315015177. The cubic root of 51616056 is about 372.3302074391.

The spelling of 51616056 in words is "fifty-one million, six hundred sixteen thousand, fifty-six".