55817244 has 36 divisors (see below), whose sum is σ = 161250544. Its totient is φ = 15947712.

The previous prime is 55817227. The next prime is 55817261. The reversal of 55817244 is 44271855.

55817244 is a `hidden beast` number, since 5 + 581 + 72 + 4 + 4 = 666.

55817244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55817227) and next prime (55817261).

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

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 = 55817199 and 55817208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110497 + ... + 111000.

Almost surely, 2^55817244 is an apocalyptic number.

It is an amenable number.

55817244 is an abundant number, since it is smaller than the sum of its proper divisors (105433300).

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

55817244 is a wasteful number, since it uses less digits than its factorization.

55817244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221514 (or 221509 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 55817244 is about 7471.0938958094. The cubic root of 55817244 is about 382.1695929254.

The spelling of 55817244 in words is "fifty-five million, eight hundred seventeen thousand, two hundred forty-four".