55919420 has 12 divisors (see below), whose sum is σ = 117430824. Its totient is φ = 22367760.

The previous prime is 55919419. The next prime is 55919441. The reversal of 55919420 is 2491955.

55919420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397966 + ... + 1398005.

It is an arithmetic number, because the mean of its divisors is an integer number (9785902).

Almost surely, 2^55919420 is an apocalyptic number.

It is an amenable number.

55919420 is an abundant number, since it is smaller than the sum of its proper divisors (61511404).

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

55919420 is a wasteful number, since it uses less digits than its factorization.

55919420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795980 (or 2795978 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 55919420 is about 7477.9288576450. The cubic root of 55919420 is about 382.4026437117.

The spelling of 55919420 in words is "fifty-five million, nine hundred nineteen thousand, four hundred twenty".