55418624 has 36 divisors (see below), whose sum is σ = 112215600. Its totient is φ = 27310080.

The previous prime is 55418537. The next prime is 55418651. The reversal of 55418624 is 42681455.

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, 16652 + ... + 19700.

It is an arithmetic number, because the mean of its divisors is an integer number (3117100).

Almost surely, 2^55418624 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 55418624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56107800).

55418624 is an abundant number, since it is smaller than the sum of its proper divisors (56796976).

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

55418624 is an equidigital number, since it uses as much as digits as its factorization.

55418624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136 (or 3122 counting only the distinct ones).

The product of its digits is 38400, while the sum is 35.

The square root of 55418624 is about 7444.3686098957. The cubic root of 55418624 is about 381.2576612632.

The spelling of 55418624 in words is "fifty-five million, four hundred eighteen thousand, six hundred twenty-four".