56201620 has 48 divisors (see below), whose sum is σ = 125294400. Its totient is φ = 21116160.

The previous prime is 56201617. The next prime is 56201653. The reversal of 56201620 is 2610265.

It is a junction number, because it is equal to n+sod(n) for n = 56201591 and 56201600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49216 + ... + 50344.

It is an arithmetic number, because the mean of its divisors is an integer number (2610300).

Almost surely, 2^56201620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56201620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62647200).

56201620 is an abundant number, since it is smaller than the sum of its proper divisors (69092780).

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

56201620 is a wasteful number, since it uses less digits than its factorization.

56201620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288 (or 1286 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 56201620 is about 7496.7739728499. The cubic root of 56201620 is about 383.0448356504.

Adding to 56201620 its reverse (2610265), we get a palindrome (58811885).

The spelling of 56201620 in words is "fifty-six million, two hundred one thousand, six hundred twenty".