56522620 has 144 divisors (see below), whose sum is σ = 158441472. Its totient is φ = 16450560.

The previous prime is 56522593. The next prime is 56522677. The reversal of 56522620 is 2622565.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 444997 + ... + 445123.

It is an arithmetic number, because the mean of its divisors is an integer number (1100288).

Almost surely, 2^56522620 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 56522620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79220736).

56522620 is an abundant number, since it is smaller than the sum of its proper divisors (101918852).

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

56522620 is a wasteful number, since it uses less digits than its factorization.

56522620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 56522620 is about 7518.1526986355. The cubic root of 56522620 is about 383.7727152536.

The spelling of 56522620 in words is "fifty-six million, five hundred twenty-two thousand, six hundred twenty".