55550544 has 80 divisors (see below), whose sum is σ = 169691520. Its totient is φ = 15321600.

The previous prime is 55550527. The next prime is 55550557. The reversal of 55550544 is 44505555.

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, 6894 + ... + 12594.

It is an arithmetic number, because the mean of its divisors is an integer number (2121144).

Almost surely, 2^55550544 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 55550544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84845760).

55550544 is an abundant number, since it is smaller than the sum of its proper divisors (114140976).

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

55550544 is a wasteful number, since it uses less digits than its factorization.

55550544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5748 (or 5742 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 33.

The square root of 55550544 is about 7453.2237320504. The cubic root of 55550544 is about 381.5599402414.

The spelling of 55550544 in words is "fifty-five million, five hundred fifty thousand, five hundred forty-four".