51713980 has 24 divisors (see below), whose sum is σ = 109911312. Its totient is φ = 20435712.

The previous prime is 51713971. The next prime is 51714007. The reversal of 51713980 is 8931715.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13917 + ... + 17236.

It is an arithmetic number, because the mean of its divisors is an integer number (4579638).

Almost surely, 2^51713980 is an apocalyptic number.

It is an amenable number.

51713980 is an abundant number, since it is smaller than the sum of its proper divisors (58197332).

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

51713980 is a wasteful number, since it uses less digits than its factorization.

51713980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31245 (or 31243 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 51713980 is about 7191.2432861085. The cubic root of 51713980 is about 372.5655155548.

The spelling of 51713980 in words is "fifty-one million, seven hundred thirteen thousand, nine hundred eighty".