22521241 has 4 divisors (see below), whose sum is σ = 22806400. Its totient is φ = 22236084.

The previous prime is 22521229. The next prime is 22521263. The reversal of 22521241 is 14212522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14212522 = 2 ⋅7106261.

It is a cyclic number.

It is not a de Polignac number, because 22521241 - 2⁷ = 22521113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22521211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142461 + ... + 142618.

It is an arithmetic number, because the mean of its divisors is an integer number (5701600).

Almost surely, 2^22521241 is an apocalyptic number.

It is an amenable number.

22521241 is a deficient number, since it is larger than the sum of its proper divisors (285159).

22521241 is an equidigital number, since it uses as much as digits as its factorization.

22521241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285158.

The product of its digits is 320, while the sum is 19.

The square root of 22521241 is about 4745.6549600661. The cubic root of 22521241 is about 282.3996187068.

Adding to 22521241 its reverse (14212522), we get a palindrome (36733763).

The spelling of 22521241 in words is "twenty-two million, five hundred twenty-one thousand, two hundred forty-one".