22531049 has 2 divisors, whose sum is σ = 22531050. Its totient is φ = 22531048.

The previous prime is 22531009. The next prime is 22531051. The reversal of 22531049 is 94013522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15745024 + 6786025 = 3968^2 + 2605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22531049 is a prime.

Together with 22531051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22531009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11265524 + 11265525.

It is an arithmetic number, because the mean of its divisors is an integer number (11265525).

Almost surely, 2^22531049 is an apocalyptic number.

It is an amenable number.

22531049 is a deficient number, since it is larger than the sum of its proper divisors (1).

22531049 is an equidigital number, since it uses as much as digits as its factorization.

22531049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 22531049 is about 4746.6882139024. The cubic root of 22531049 is about 282.4406077665.

The spelling of 22531049 in words is "twenty-two million, five hundred thirty-one thousand, forty-nine".