22574989 has 2 divisors, whose sum is σ = 22574990. Its totient is φ = 22574988.

The previous prime is 22574987. The next prime is 22574999. The reversal of 22574989 is 98947522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22250089 + 324900 = 4717^2 + 570^2 .

It is a cyclic number.

It is not a de Polignac number, because 22574989 - 2¹ = 22574987 is a prime.

Together with 22574987, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22574987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11287494 + 11287495.

It is an arithmetic number, because the mean of its divisors is an integer number (11287495).

Almost surely, 2^22574989 is an apocalyptic number.

It is an amenable number.

22574989 is a deficient number, since it is larger than the sum of its proper divisors (1).

22574989 is an equidigital number, since it uses as much as digits as its factorization.

22574989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 46.

The square root of 22574989 is about 4751.3144497076. The cubic root of 22574989 is about 282.6240935485.

The spelling of 22574989 in words is "twenty-two million, five hundred seventy-four thousand, nine hundred eighty-nine".