55409888 has 12 divisors (see below), whose sum is σ = 109088280. Its totient is φ = 27704928.

The previous prime is 55409873. The next prime is 55409933. The reversal of 55409888 is 88890455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 865748 + ... + 865811.

It is an arithmetic number, because the mean of its divisors is an integer number (9090690).

Almost surely, 2^55409888 is an apocalyptic number.

It is an amenable number.

55409888 is a deficient number, since it is larger than the sum of its proper divisors (53678392).

55409888 is a wasteful number, since it uses less digits than its factorization.

55409888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731569 (or 1731561 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 47.

The square root of 55409888 is about 7443.7818345247. The cubic root of 55409888 is about 381.2376268313.

The spelling of 55409888 in words is "fifty-five million, four hundred nine thousand, eight hundred eighty-eight".