51090704 has 20 divisors (see below), whose sum is σ = 113129664. Its totient is φ = 21895968.

The previous prime is 51090679. The next prime is 51090707. The reversal of 51090704 is 40709015.

It is a super-2 number, since 2×51090704² = 5220520070431232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51090707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227972 + ... + 228195.

Almost surely, 2^51090704 is an apocalyptic number.

It is an amenable number.

51090704 is an abundant number, since it is smaller than the sum of its proper divisors (62038960).

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

51090704 is a wasteful number, since it uses less digits than its factorization.

51090704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456182 (or 456176 counting only the distinct ones).

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

The square root of 51090704 is about 7147.7761576591. The cubic root of 51090704 is about 371.0626960106.

Adding to 51090704 its reverse (40709015), we get a palindrome (91799719).

The spelling of 51090704 in words is "fifty-one million, ninety thousand, seven hundred four".