55409874 has 16 divisors (see below), whose sum is σ = 119344512. Its totient is φ = 17049168.

The previous prime is 55409873. The next prime is 55409933. The reversal of 55409874 is 47890455.

It is not an unprimeable number, because it can be changed into a prime (55409873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355114 + ... + 355269.

It is an arithmetic number, because the mean of its divisors is an integer number (7459032).

Almost surely, 2^55409874 is an apocalyptic number.

55409874 is an abundant number, since it is smaller than the sum of its proper divisors (63934638).

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

55409874 is a wasteful number, since it uses less digits than its factorization.

55409874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710401.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 55409874 is about 7443.7808941424. The cubic root of 55409874 is about 381.2375947231.

The spelling of 55409874 in words is "fifty-five million, four hundred nine thousand, eight hundred seventy-four".