55790244 has 36 divisors (see below), whose sum is σ = 141667344. Its totient is φ = 18512112.

The previous prime is 55790237. The next prime is 55790257. The reversal of 55790244 is 44209755.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×55790244² = 6225102651159072, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 55790199 and 55790208.

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, 4759 + ... + 11585.

It is an arithmetic number, because the mean of its divisors is an integer number (3935204).

Almost surely, 2^55790244 is an apocalyptic number.

It is an amenable number.

55790244 is an abundant number, since it is smaller than the sum of its proper divisors (85877100).

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

55790244 is a wasteful number, since it uses less digits than its factorization.

55790244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7064 (or 7059 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 55790244 is about 7469.2867129332. The cubic root of 55790244 is about 382.1079617729.

Adding to 55790244 its reverse (44209755), we get a palindrome (99999999).

The spelling of 55790244 in words is "fifty-five million, seven hundred ninety thousand, two hundred forty-four".