22531129 has 2 divisors, whose sum is σ = 22531130. Its totient is φ = 22531128.

The previous prime is 22531073. The next prime is 22531153. The reversal of 22531129 is 92113522.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20457529 + 2073600 = 4523^2 + 1440^2 .

It is a cyclic number.

It is not a de Polignac number, because 22531129 - 2¹⁷ = 22400057 is a prime.

It is not a weakly prime, because it can be changed into another prime (22531829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11265564 + 11265565.

It is an arithmetic number, because the mean of its divisors is an integer number (11265565).

Almost surely, 2^22531129 is an apocalyptic number.

It is an amenable number.

22531129 is a deficient number, since it is larger than the sum of its proper divisors (1).

22531129 is an equidigital number, since it uses as much as digits as its factorization.

22531129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 22531129 is about 4746.6966408230. The cubic root of 22531129 is about 282.4409420493.

The spelling of 22531129 in words is "twenty-two million, five hundred thirty-one thousand, one hundred twenty-nine".