56201820 has 24 divisors (see below), whose sum is σ = 157365264. Its totient is φ = 14987136.

The previous prime is 56201777. The next prime is 56201843. The reversal of 56201820 is 2810265.

56201820 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 7 ways as a sum of consecutive naturals, for example, 468289 + ... + 468408.

It is an arithmetic number, because the mean of its divisors is an integer number (6556886).

Almost surely, 2^56201820 is an apocalyptic number.

It is an amenable number.

56201820 is an abundant number, since it is smaller than the sum of its proper divisors (101163444).

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

56201820 is a wasteful number, since it uses less digits than its factorization.

56201820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936709 (or 936707 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 56201820 is about 7496.7873119090. The cubic root of 56201820 is about 383.0452900197.

The spelling of 56201820 in words is "fifty-six million, two hundred one thousand, eight hundred twenty".