55833840 has 80 divisors (see below), whose sum is σ = 192324000. Its totient is φ = 14888448.

The previous prime is 55833793. The next prime is 55833863. The reversal of 55833840 is 4833855.

55833840 is a `hidden beast` number, since 5 + 583 + 38 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

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 = 55833795 and 55833804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10765 + ... + 15084.

It is an arithmetic number, because the mean of its divisors is an integer number (2404050).

Almost surely, 2^55833840 is an apocalyptic number.

It is an amenable number.

55833840 is an abundant number, since it is smaller than the sum of its proper divisors (136490160).

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

55833840 is a wasteful number, since it uses less digits than its factorization.

55833840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25871 (or 25859 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 55833840 is about 7472.2044939897. The cubic root of 55833840 is about 382.2074656783.

The spelling of 55833840 in words is "fifty-five million, eight hundred thirty-three thousand, eight hundred forty".