22572251 has 8 divisors (see below), whose sum is σ = 24354960. Its totient is φ = 20796192.

The previous prime is 22572241. The next prime is 22572259. The reversal of 22572251 is 15227522.

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

It is a cyclic number.

It is not a de Polignac number, because 22572251 - 2¹⁸ = 22310107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22572251.

It is not an unprimeable number, because it can be changed into a prime (22572259) 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, 7160 + ... + 9818.

It is an arithmetic number, because the mean of its divisors is an integer number (3044370).

Almost surely, 2^22572251 is an apocalyptic number.

22572251 is a deficient number, since it is larger than the sum of its proper divisors (1782709).

22572251 is a wasteful number, since it uses less digits than its factorization.

22572251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325.

The product of its digits is 2800, while the sum is 26.

The square root of 22572251 is about 4751.0263101776. The cubic root of 22572251 is about 282.6126670969.

Adding to 22572251 its reverse (15227522), we get a palindrome (37799773).

The spelling of 22572251 in words is "twenty-two million, five hundred seventy-two thousand, two hundred fifty-one".