51713656 has 8 divisors (see below), whose sum is σ = 96963120. Its totient is φ = 25856824.

The previous prime is 51713653. The next prime is 51713671. The reversal of 51713656 is 65631715.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51713653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3232096 + ... + 3232111.

It is an arithmetic number, because the mean of its divisors is an integer number (12120390).

Almost surely, 2^51713656 is an apocalyptic number.

It is an amenable number.

51713656 is a deficient number, since it is larger than the sum of its proper divisors (45249464).

51713656 is a wasteful number, since it uses less digits than its factorization.

51713656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6464213 (or 6464209 counting only the distinct ones).

The product of its digits is 18900, while the sum is 34.

The square root of 51713656 is about 7191.2207586751. The cubic root of 51713656 is about 372.5647374835.

The spelling of 51713656 in words is "fifty-one million, seven hundred thirteen thousand, six hundred fifty-six".