22156552 has 48 divisors (see below), whose sum is σ = 46730880. Its totient is φ = 9836640.

The previous prime is 22156549. The next prime is 22156571. The reversal of 22156552 is 25565122.

It is a self number, because there is not a number n which added to its sum of digits gives 22156552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45253 + ... + 45739.

It is an arithmetic number, because the mean of its divisors is an integer number (973560).

Almost surely, 2^22156552 is an apocalyptic number.

22156552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22156552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23365440).

22156552 is an abundant number, since it is smaller than the sum of its proper divisors (24574328).

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

22156552 is a wasteful number, since it uses less digits than its factorization.

22156552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 547 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 22156552 is about 4707.0746754221. The cubic root of 22156552 is about 280.8670064630.

The spelling of 22156552 in words is "twenty-two million, one hundred fifty-six thousand, five hundred fifty-two".