55376664 has 120 divisors (see below), whose sum is σ = 166883580. Its totient is φ = 15311520.

The previous prime is 55376653. The next prime is 55376677. The reversal of 55376664 is 46667355.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1786329 + ... + 1786359.

Almost surely, 2^55376664 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 55376664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83441790).

55376664 is an abundant number, since it is smaller than the sum of its proper divisors (111506916).

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

55376664 is an equidigital number, since it uses as much as digits as its factorization.

55376664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 43 counting only the distinct ones).

The product of its digits is 453600, while the sum is 42.

The square root of 55376664 is about 7441.5498385753. The cubic root of 55376664 is about 381.1614143730.

The spelling of 55376664 in words is "fifty-five million, three hundred seventy-six thousand, six hundred sixty-four".