51700940 has 24 divisors (see below), whose sum is σ = 110884032. Its totient is φ = 20240000.

The previous prime is 51700937. The next prime is 51700967. The reversal of 51700940 is 4900715.

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, 26561 + ... + 28440.

It is an arithmetic number, because the mean of its divisors is an integer number (4620168).

Almost surely, 2^51700940 is an apocalyptic number.

It is an amenable number.

51700940 is an abundant number, since it is smaller than the sum of its proper divisors (59183092).

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

51700940 is a wasteful number, since it uses less digits than its factorization.

51700940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55057 (or 55055 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 51700940 is about 7190.3365707038. The cubic root of 51700940 is about 372.5341980224.

The spelling of 51700940 in words is "fifty-one million, seven hundred thousand, nine hundred forty".