22522881 has 4 divisors (see below), whose sum is σ = 30030512. Its totient is φ = 15015252.

The previous prime is 22522867. The next prime is 22522883. The reversal of 22522881 is 18822522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22522881 - 2⁵ = 22522849 is a prime.

It is a super-2 number, since 2×22522881² = 1014560337080322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22522883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3753811 + ... + 3753816.

It is an arithmetic number, because the mean of its divisors is an integer number (7507628).

Almost surely, 2^22522881 is an apocalyptic number.

It is an amenable number.

22522881 is a deficient number, since it is larger than the sum of its proper divisors (7507631).

22522881 is an equidigital number, since it uses as much as digits as its factorization.

22522881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7507630.

The product of its digits is 5120, while the sum is 30.

The square root of 22522881 is about 4745.8277465580. The cubic root of 22522881 is about 282.4064733340.

The spelling of 22522881 in words is "twenty-two million, five hundred twenty-two thousand, eight hundred eighty-one".