22552256 has 42 divisors (see below), whose sum is σ = 46459140. Its totient is φ = 10861312.

The previous prime is 22552241. The next prime is 22552261. The reversal of 22552256 is 65225522.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53615 + ... + 54033.

It is an arithmetic number, because the mean of its divisors is an integer number (1106170).

Almost surely, 2^22552256 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 22552256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23229570).

22552256 is an abundant number, since it is smaller than the sum of its proper divisors (23906884).

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

22552256 is an equidigital number, since it uses as much as digits as its factorization.

22552256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 450 counting only the distinct ones).

The product of its digits is 12000, while the sum is 29.

The square root of 22552256 is about 4748.9215617864. The cubic root of 22552256 is about 282.5291942575.

Adding to 22552256 its reverse (65225522), we get a palindrome (87777778).

The spelling of 22552256 in words is "twenty-two million, five hundred fifty-two thousand, two hundred fifty-six".