55216164 has 36 divisors (see below), whose sum is σ = 131700464. Its totient is φ = 18005136.

The previous prime is 55216151. The next prime is 55216199. The reversal of 55216164 is 46161255.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25467 + ... + 27549.

Almost surely, 2^55216164 is an apocalyptic number.

It is an amenable number.

55216164 is an abundant number, since it is smaller than the sum of its proper divisors (76484300).

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

55216164 is a wasteful number, since it uses less digits than its factorization.

55216164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184 (or 2135 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 55216164 is about 7430.7579694133. The cubic root of 55216164 is about 380.7928138282.

The spelling of 55216164 in words is "fifty-five million, two hundred sixteen thousand, one hundred sixty-four".