55326656 has 112 divisors (see below), whose sum is σ = 139476480. Its totient is φ = 21150720.

The previous prime is 55326641. The next prime is 55326673. The reversal of 55326656 is 65662355.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×55326656² = 6122077728284672, which contains 22 as substring.

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, 507530 + ... + 507638.

Almost surely, 2^55326656 is an apocalyptic number.

55326656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55326656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69738240).

55326656 is an abundant number, since it is smaller than the sum of its proper divisors (84149824).

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

55326656 is a wasteful number, since it uses less digits than its factorization.

55326656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 232 counting only the distinct ones).

The product of its digits is 162000, while the sum is 38.

The square root of 55326656 is about 7438.1890269070. The cubic root of 55326656 is about 381.0466436420.

The spelling of 55326656 in words is "fifty-five million, three hundred twenty-six thousand, six hundred fifty-six".