51481704 has 32 divisors (see below), whose sum is σ = 128905920. Its totient is φ = 17133696.

The previous prime is 51481667. The next prime is 51481721. The reversal of 51481704 is 40718415.

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, 19317 + ... + 21819.

It is an arithmetic number, because the mean of its divisors is an integer number (4028310).

Almost surely, 2^51481704 is an apocalyptic number.

It is an amenable number.

51481704 is an abundant number, since it is smaller than the sum of its proper divisors (77424216).

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

51481704 is a wasteful number, since it uses less digits than its factorization.

51481704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369 (or 3365 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 51481704 is about 7175.0751912436. The cubic root of 51481704 is about 372.0068792808.

The spelling of 51481704 in words is "fifty-one million, four hundred eighty-one thousand, seven hundred four".