22452521 has 8 divisors (see below), whose sum is σ = 27633984. Its totient is φ = 17764560.

The previous prime is 22452517. The next prime is 22452527. The reversal of 22452521 is 12525422.

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 22452521 - 2² = 22452517 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22452527) 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, 123275 + ... + 123456.

It is an arithmetic number, because the mean of its divisors is an integer number (3454248).

Almost surely, 2^22452521 is an apocalyptic number.

It is an amenable number.

22452521 is a deficient number, since it is larger than the sum of its proper divisors (5181463).

22452521 is a wasteful number, since it uses less digits than its factorization.

22452521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246751.

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

The square root of 22452521 is about 4738.4091212136. The cubic root of 22452521 is about 282.1120934923.

Adding to 22452521 its reverse (12525422), we get a palindrome (34977943).

The spelling of 22452521 in words is "twenty-two million, four hundred fifty-two thousand, five hundred twenty-one".