56205522 has 64 divisors (see below), whose sum is σ = 128920320. Its totient is φ = 18144000.

The previous prime is 56205521. The next prime is 56205533. The reversal of 56205522 is 22550265.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (56205521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 372147 + ... + 372297.

It is an arithmetic number, because the mean of its divisors is an integer number (2014380).

Almost surely, 2^56205522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56205522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64460160).

56205522 is an abundant number, since it is smaller than the sum of its proper divisors (72714798).

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

56205522 is a wasteful number, since it uses less digits than its factorization.

56205522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 56205522 is about 7497.0342136074. The cubic root of 56205522 is about 383.0537002012.

Adding to 56205522 its reverse (22550265), we get a palindrome (78755787).

The spelling of 56205522 in words is "fifty-six million, two hundred five thousand, five hundred twenty-two".