55167216 has 80 divisors (see below), whose sum is σ = 154573440. Its totient is φ = 16853760.

The previous prime is 55167209. The next prime is 55167221. The reversal of 55167216 is 61276155.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131455 + ... + 131873.

It is an arithmetic number, because the mean of its divisors is an integer number (1932168).

Almost surely, 2^55167216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55167216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77286720).

55167216 is an abundant number, since it is smaller than the sum of its proper divisors (99406224).

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

55167216 is a wasteful number, since it uses less digits than its factorization.

55167216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654 (or 648 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 55167216 is about 7427.4636316848. The cubic root of 55167216 is about 380.6802588822.

The spelling of 55167216 in words is "fifty-five million, one hundred sixty-seven thousand, two hundred sixteen".