55965516 has 12 divisors (see below), whose sum is σ = 130586232. Its totient is φ = 18655168.

The previous prime is 55965493. The next prime is 55965517. The reversal of 55965516 is 61556955.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×55965516² = 6264277962292512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55965517) 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, 2331885 + ... + 2331908.

It is an arithmetic number, because the mean of its divisors is an integer number (10882186).

Almost surely, 2^55965516 is an apocalyptic number.

It is an amenable number.

55965516 is an abundant number, since it is smaller than the sum of its proper divisors (74620716).

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

55965516 is a wasteful number, since it uses less digits than its factorization.

55965516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4663800 (or 4663798 counting only the distinct ones).

The product of its digits is 202500, while the sum is 42.

The square root of 55965516 is about 7481.0103595704. The cubic root of 55965516 is about 382.5076900500.

The spelling of 55965516 in words is "fifty-five million, nine hundred sixty-five thousand, five hundred sixteen".