55554624 has 84 divisors (see below), whose sum is σ = 163013136. Its totient is φ = 18079488.

The previous prime is 55554593. The next prime is 55554641. The reversal of 55554624 is 42645555.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 23647 + ... + 25889.

Almost surely, 2^55554624 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 55554624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81506568).

55554624 is an abundant number, since it is smaller than the sum of its proper divisors (107458512).

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

55554624 is a wasteful number, since it uses less digits than its factorization.

55554624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304 (or 2291 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The square root of 55554624 is about 7453.4974340909. The cubic root of 55554624 is about 381.5692814427.

The spelling of 55554624 in words is "fifty-five million, five hundred fifty-four thousand, six hundred twenty-four".