55550244 has 48 divisors (see below), whose sum is σ = 138579840. Its totient is φ = 17276160.

The previous prime is 55550213. The next prime is 55550263. The reversal of 55550244 is 44205555.

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, 8862 + ... + 13770.

It is an arithmetic number, because the mean of its divisors is an integer number (2887080).

Almost surely, 2^55550244 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 55550244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69289920).

55550244 is an abundant number, since it is smaller than the sum of its proper divisors (83029596).

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

55550244 is a wasteful number, since it uses less digits than its factorization.

55550244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4980 (or 4978 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 55550244 is about 7453.2036065037. The cubic root of 55550244 is about 381.5592533703.

Adding to 55550244 its reverse (44205555), we get a palindrome (99755799).

The spelling of 55550244 in words is "fifty-five million, five hundred fifty thousand, two hundred forty-four".