22155522 has 32 divisors (see below), whose sum is σ = 47500992. Its totient is φ = 6864384.

The previous prime is 22155491. The next prime is 22155547. The reversal of 22155522 is 22555122.

It is a junction number, because it is equal to n+sod(n) for n = 22155492 and 22155501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7158 + ... + 9774.

It is an arithmetic number, because the mean of its divisors is an integer number (1484406).

Almost surely, 2^22155522 is an apocalyptic number.

22155522 is an abundant number, since it is smaller than the sum of its proper divisors (25345470).

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

22155522 is a wasteful number, since it uses less digits than its factorization.

22155522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2722.

The product of its digits is 2000, while the sum is 24.

The square root of 22155522 is about 4706.9652643715. The cubic root of 22155522 is about 280.8626541387.

The spelling of 22155522 in words is "twenty-two million, one hundred fifty-five thousand, five hundred twenty-two".