22553145 has 24 divisors (see below), whose sum is σ = 39331656. Its totient is φ = 11954688.

The previous prime is 22553129. The next prime is 22553147. The reversal of 22553145 is 54135522.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2518569 + 20034576 = 1587^2 + 4476^2 .

It is not a de Polignac number, because 22553145 - 2⁴ = 22553129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22553147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6337 + ... + 9233.

It is an arithmetic number, because the mean of its divisors is an integer number (1638819).

Almost surely, 2^22553145 is an apocalyptic number.

It is an amenable number.

22553145 is a deficient number, since it is larger than the sum of its proper divisors (16778511).

22553145 is a wasteful number, since it uses less digits than its factorization.

22553145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081 (or 3078 counting only the distinct ones).

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

The square root of 22553145 is about 4749.0151610623. The cubic root of 22553145 is about 282.5329066009.

Adding to 22553145 its reverse (54135522), we get a palindrome (76688667).

The spelling of 22553145 in words is "twenty-two million, five hundred fifty-three thousand, one hundred forty-five".