22528141 has 4 divisors (see below), whose sum is σ = 22537692. Its totient is φ = 22518592.

The previous prime is 22528123. The next prime is 22528169. The reversal of 22528141 is 14182522.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9954025 + 12574116 = 3155^2 + 3546^2 .

It is a cyclic number.

It is not a de Polignac number, because 22528141 - 2⁹ = 22527629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22528241) 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, 1605 + ... + 6901.

It is an arithmetic number, because the mean of its divisors is an integer number (5634423).

Almost surely, 2^22528141 is an apocalyptic number.

It is an amenable number.

22528141 is a deficient number, since it is larger than the sum of its proper divisors (9551).

22528141 is an equidigital number, since it uses as much as digits as its factorization.

22528141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9550.

The product of its digits is 1280, while the sum is 25.

The square root of 22528141 is about 4746.3818851837. The cubic root of 22528141 is about 282.4284560520.

The spelling of 22528141 in words is "twenty-two million, five hundred twenty-eight thousand, one hundred forty-one".