55455744 has 52 divisors (see below), whose sum is σ = 147896696. Its totient is φ = 18481152.

The previous prime is 55455731. The next prime is 55455779. The reversal of 55455744 is 44755455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10032 + ... + 14544.

Almost surely, 2^55455744 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 55455744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73948348).

55455744 is an abundant number, since it is smaller than the sum of its proper divisors (92440952).

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

55455744 is an equidigital number, since it uses as much as digits as its factorization.

55455744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4540 (or 4518 counting only the distinct ones).

The product of its digits is 280000, while the sum is 39.

The square root of 55455744 is about 7446.8613522745. The cubic root of 55455744 is about 381.3427657808.

The spelling of 55455744 in words is "fifty-five million, four hundred fifty-five thousand, seven hundred forty-four".