55616516 has 6 divisors (see below), whose sum is σ = 97328910. Its totient is φ = 27808256.

The previous prime is 55616479. The next prime is 55616549. The reversal of 55616516 is 61561655.

It can be written as a sum of positive squares in only one way, i.e., 35402500 + 20214016 = 5950^2 + 4496^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6952061 + ... + 6952068.

It is an arithmetic number, because the mean of its divisors is an integer number (16221485).

Almost surely, 2^55616516 is an apocalyptic number.

It is an amenable number.

55616516 is a deficient number, since it is larger than the sum of its proper divisors (41712394).

55616516 is a wasteful number, since it uses less digits than its factorization.

55616516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13904133 (or 13904131 counting only the distinct ones).

The product of its digits is 27000, while the sum is 35.

The square root of 55616516 is about 7457.6481547469. The cubic root of 55616516 is about 381.7109277460.

The spelling of 55616516 in words is "fifty-five million, six hundred sixteen thousand, five hundred sixteen".