22552506 has 80 divisors (see below), whose sum is σ = 56453760. Its totient is φ = 6687360.

The previous prime is 22552477. The next prime is 22552559. The reversal of 22552506 is 60525522.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22552506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 52111 + ... + 52541.

It is an arithmetic number, because the mean of its divisors is an integer number (705672).

Almost surely, 2^22552506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22552506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28226880).

22552506 is an abundant number, since it is smaller than the sum of its proper divisors (33901254).

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

22552506 is a wasteful number, since it uses less digits than its factorization.

22552506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 472 counting only the distinct ones).

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

The square root of 22552506 is about 4748.9478834790. The cubic root of 22552506 is about 282.5302382335.

22552506 divided by its sum of digits (27) gives a triangular number (835278 = T₁₂₉₂).

It can be divided in two parts, 2255 and 2506, that added together give a square (4761 = 69²).

The spelling of 22552506 in words is "twenty-two million, five hundred fifty-two thousand, five hundred six".