55409832 has 64 divisors (see below), whose sum is σ = 155865600. Its totient is φ = 18464112.

The previous prime is 55409821. The next prime is 55409867. The reversal of 55409832 is 23890455.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 15913 + ... + 19079.

It is an arithmetic number, because the mean of its divisors is an integer number (2435400).

Almost surely, 2^55409832 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 55409832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77932800).

55409832 is an abundant number, since it is smaller than the sum of its proper divisors (100455768).

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

55409832 is an equidigital number, since it uses as much as digits as its factorization.

55409832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3194 (or 3172 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 55409832 is about 7443.7780729949. The cubic root of 55409832 is about 381.2374983986.

The spelling of 55409832 in words is "fifty-five million, four hundred nine thousand, eight hundred thirty-two".