51116516 has 24 divisors (see below), whose sum is σ = 97847904. Its totient is φ = 23172480.

The previous prime is 51116509. The next prime is 51116561. The reversal of 51116516 is 61561115.

It is a super-2 number, since 2×51116516² = 5225796415956512, which contains 22 as substring.

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, 17711 + ... + 20393.

It is an arithmetic number, because the mean of its divisors is an integer number (4076996).

Almost surely, 2^51116516 is an apocalyptic number.

It is an amenable number.

51116516 is a deficient number, since it is larger than the sum of its proper divisors (46731388).

51116516 is a wasteful number, since it uses less digits than its factorization.

51116516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3131 (or 3129 counting only the distinct ones).

The product of its digits is 900, while the sum is 26.

The square root of 51116516 is about 7149.5815262154. The cubic root of 51116516 is about 371.1251748116.

The spelling of 51116516 in words is "fifty-one million, one hundred sixteen thousand, five hundred sixteen".