22252145 has 8 divisors (see below), whose sum is σ = 27155520. Its totient is φ = 17499760.

The previous prime is 22252127. The next prime is 22252147. The reversal of 22252145 is 54125222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-22252145 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22252145.

It is not an unprimeable number, because it can be changed into a prime (22252147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37421 + ... + 38010.

It is an arithmetic number, because the mean of its divisors is an integer number (3394440).

Almost surely, 2^22252145 is an apocalyptic number.

It is an amenable number.

22252145 is a deficient number, since it is larger than the sum of its proper divisors (4903375).

22252145 is an equidigital number, since it uses as much as digits as its factorization.

22252145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75495.

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

The square root of 22252145 is about 4717.2179300940. The cubic root of 22252145 is about 281.2703544117.

Adding to 22252145 its reverse (54125222), we get a palindrome (76377367).

The spelling of 22252145 in words is "twenty-two million, two hundred fifty-two thousand, one hundred forty-five".