55840885 has 8 divisors (see below), whose sum is σ = 67193856. Its totient is φ = 44549520.

The previous prime is 55840877. The next prime is 55840891. The reversal of 55840885 is 58804855.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55840885 - 2³ = 55840877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13381 + ... + 17050.

It is an arithmetic number, because the mean of its divisors is an integer number (8399232).

Almost surely, 2^55840885 is an apocalyptic number.

It is an amenable number.

55840885 is a deficient number, since it is larger than the sum of its proper divisors (11352971).

55840885 is a wasteful number, since it uses less digits than its factorization.

55840885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30803.

The product of its (nonzero) digits is 256000, while the sum is 43.

The square root of 55840885 is about 7472.6758928780. The cubic root of 55840885 is about 382.2235403883.

The spelling of 55840885 in words is "fifty-five million, eight hundred forty thousand, eight hundred eighty-five".