55445244 has 12 divisors (see below), whose sum is σ = 129372264. Its totient is φ = 18481744.

The previous prime is 55445239. The next prime is 55445311. The reversal of 55445244 is 44254455.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

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, 2310207 + ... + 2310230.

It is an arithmetic number, because the mean of its divisors is an integer number (10781022).

Almost surely, 2^55445244 is an apocalyptic number.

It is an amenable number.

55445244 is an abundant number, since it is smaller than the sum of its proper divisors (73927020).

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

55445244 is a wasteful number, since it uses less digits than its factorization.

55445244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4620444 (or 4620442 counting only the distinct ones).

The product of its digits is 64000, while the sum is 33.

The square root of 55445244 is about 7446.1563239030. The cubic root of 55445244 is about 381.3186964269.

Adding to 55445244 its reverse (44254455), we get a palindrome (99699699).

The spelling of 55445244 in words is "fifty-five million, four hundred forty-five thousand, two hundred forty-four".