55159944 has 32 divisors (see below), whose sum is σ = 157600320. Its totient is φ = 15759936.

The previous prime is 55159939. The next prime is 55159963. The reversal of 55159944 is 44995155.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 55159896 and 55159905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163999 + ... + 164334.

It is an arithmetic number, because the mean of its divisors is an integer number (4925010).

Almost surely, 2^55159944 is an apocalyptic number.

It is an amenable number.

55159944 is an abundant number, since it is smaller than the sum of its proper divisors (102440376).

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

55159944 is a wasteful number, since it uses less digits than its factorization.

55159944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328349 (or 328345 counting only the distinct ones).

The product of its digits is 162000, while the sum is 42.

The square root of 55159944 is about 7426.9740810104. The cubic root of 55159944 is about 380.6635313842.

The spelling of 55159944 in words is "fifty-five million, one hundred fifty-nine thousand, nine hundred forty-four".