22153145 has 24 divisors (see below), whose sum is σ = 32558400. Its totient is φ = 14388192.

The previous prime is 22153139. The next prime is 22153147. The reversal of 22153145 is 54135122.

It is not a de Polignac number, because 22153145 - 2¹⁰ = 22152121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22153145.

It is not an unprimeable number, because it can be changed into a prime (22153147) 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, 2276 + ... + 7034.

It is an arithmetic number, because the mean of its divisors is an integer number (1356600).

Almost surely, 2^22153145 is an apocalyptic number.

It is an amenable number.

22153145 is a deficient number, since it is larger than the sum of its proper divisors (10405255).

22153145 is a wasteful number, since it uses less digits than its factorization.

22153145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4797 (or 4790 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 22153145 is about 4706.7127594532. The cubic root of 22153145 is about 280.8526094734.

Adding to 22153145 its reverse (54135122), we get a palindrome (76288267).

The spelling of 22153145 in words is "twenty-two million, one hundred fifty-three thousand, one hundred forty-five".