22522145 has 4 divisors (see below), whose sum is σ = 27026580. Its totient is φ = 18017712.

The previous prime is 22522141. The next prime is 22522169. The reversal of 22522145 is 54122522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9784384 + 12737761 = 3128^2 + 3569^2 .

It is a cyclic number.

It is not a de Polignac number, because 22522145 - 2² = 22522141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22522145.

It is not an unprimeable number, because it can be changed into a prime (22522141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2252210 + ... + 2252219.

It is an arithmetic number, because the mean of its divisors is an integer number (6756645).

Almost surely, 2^22522145 is an apocalyptic number.

It is an amenable number.

22522145 is a deficient number, since it is larger than the sum of its proper divisors (4504435).

22522145 is an equidigital number, since it uses as much as digits as its factorization.

22522145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4504434.

The product of its digits is 1600, while the sum is 23.

The square root of 22522145 is about 4745.7502041300. The cubic root of 22522145 is about 282.4033971522.

Adding to 22522145 its reverse (54122522), we get a palindrome (76644667).

The spelling of 22522145 in words is "twenty-two million, five hundred twenty-two thousand, one hundred forty-five".