51707660 has 24 divisors (see below), whose sum is σ = 109109616. Its totient is φ = 20583360.

The previous prime is 51707651. The next prime is 51707671. The reversal of 51707660 is 6670715.

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, 1907 + ... + 10346.

It is an arithmetic number, because the mean of its divisors is an integer number (4546234).

Almost surely, 2^51707660 is an apocalyptic number.

It is an amenable number.

51707660 is an abundant number, since it is smaller than the sum of its proper divisors (57401956).

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

51707660 is a wasteful number, since it uses less digits than its factorization.

51707660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12473 (or 12471 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 51707660 is about 7190.8038493620. The cubic root of 51707660 is about 372.5503377764.

The spelling of 51707660 in words is "fifty-one million, seven hundred seven thousand, six hundred sixty".