55839744 has 132 divisors (see below), whose sum is σ = 165413976. Its totient is φ = 18137088.

The previous prime is 55839731. The next prime is 55839779. The reversal of 55839744 is 44793855.

55839744 is a `hidden beast` number, since 558 + 3 + 97 + 4 + 4 = 666.

It is a super-3 number, since 3×55839744³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55839744.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 672727 + ... + 672809.

Almost surely, 2^55839744 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 55839744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82706988).

55839744 is an abundant number, since it is smaller than the sum of its proper divisors (109574232).

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

55839744 is a wasteful number, since it uses less digits than its factorization.

55839744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 161 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 55839744 is about 7472.5995476808. The cubic root of 55839744 is about 382.2209370387.

The spelling of 55839744 in words is "fifty-five million, eight hundred thirty-nine thousand, seven hundred forty-four".