55885420 has 12 divisors (see below), whose sum is σ = 117359424. Its totient is φ = 22354160.

The previous prime is 55885399. The next prime is 55885433. The reversal of 55885420 is 2458855.

It is a self number, because there is not a number n which added to its sum of digits gives 55885420.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397116 + ... + 1397155.

It is an arithmetic number, because the mean of its divisors is an integer number (9779952).

Almost surely, 2^55885420 is an apocalyptic number.

It is an amenable number.

55885420 is an abundant number, since it is smaller than the sum of its proper divisors (61474004).

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

55885420 is a wasteful number, since it uses less digits than its factorization.

55885420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2794280 (or 2794278 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 37.

The square root of 55885420 is about 7475.6551552356. The cubic root of 55885420 is about 382.3251254669.

The spelling of 55885420 in words is "fifty-five million, eight hundred eighty-five thousand, four hundred twenty".