55619020 has 12 divisors (see below), whose sum is σ = 116799984. Its totient is φ = 22247600.

The previous prime is 55619017. The next prime is 55619021. The reversal of 55619020 is 2091655.

55619020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 55619020.

It is not an unprimeable number, because it can be changed into a prime (55619021) by changing a digit.

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, 1390456 + ... + 1390495.

It is an arithmetic number, because the mean of its divisors is an integer number (9733332).

Almost surely, 2^55619020 is an apocalyptic number.

It is an amenable number.

55619020 is an abundant number, since it is smaller than the sum of its proper divisors (61180964).

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

55619020 is a wasteful number, since it uses less digits than its factorization.

55619020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780960 (or 2780958 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 55619020 is about 7457.8160342020. The cubic root of 55619020 is about 381.7166561992.

The spelling of 55619020 in words is "fifty-five million, six hundred nineteen thousand, twenty".