55810944 has 160 divisors (see below), whose sum is σ = 190066800. Its totient is φ = 15925248.

The previous prime is 55810939. The next prime is 55810973. The reversal of 55810944 is 44901855.

55810944 is a `hidden beast` number, since 558 + 10 + 94 + 4 = 666.

It is a super-2 number, since 2×55810944² = 6229722940342272, 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 = 55810899 and 55810908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 72192 + ... + 72960.

Almost surely, 2^55810944 is an apocalyptic number.

55810944 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55810944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95033400).

55810944 is an abundant number, since it is smaller than the sum of its proper divisors (134255856).

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

55810944 is an equidigital number, since it uses as much as digits as its factorization.

55810944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 781 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 55810944 is about 7470.6722589068. The cubic root of 55810944 is about 382.1552141012.

The spelling of 55810944 in words is "fifty-five million, eight hundred ten thousand, nine hundred forty-four".