55592240 has 60 divisors (see below), whose sum is σ = 142095072. Its totient is φ = 20211840.

The previous prime is 55592239. The next prime is 55592281. The reversal of 55592240 is 4229555.

It is a junction number, because it is equal to n+sod(n) for n = 55592197 and 55592206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6809 + ... + 12551.

Almost surely, 2^55592240 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 55592240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71047536).

55592240 is an abundant number, since it is smaller than the sum of its proper divisors (86502832).

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

55592240 is a wasteful number, since it uses less digits than its factorization.

55592240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5778 (or 5761 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 55592240 is about 7456.0203862382. The cubic root of 55592240 is about 381.6553821173.

It can be divided in two parts, 55 and 592240, that added together give a palindrome (592295).

The spelling of 55592240 in words is "fifty-five million, five hundred ninety-two thousand, two hundred forty".