22591169 has 2 divisors, whose sum is σ = 22591170. Its totient is φ = 22591168.

The previous prime is 22591139. The next prime is 22591183. The reversal of 22591169 is 96119522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14250625 + 8340544 = 3775^2 + 2888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22591169 is a prime.

It is a super-2 number, since 2×22591169² = 1020721833573122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22591109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11295584 + 11295585.

It is an arithmetic number, because the mean of its divisors is an integer number (11295585).

Almost surely, 2^22591169 is an apocalyptic number.

It is an amenable number.

22591169 is a deficient number, since it is larger than the sum of its proper divisors (1).

22591169 is an equidigital number, since it uses as much as digits as its factorization.

22591169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 35.

The square root of 22591169 is about 4753.0168314451. The cubic root of 22591169 is about 282.6915984286.

The spelling of 22591169 in words is "twenty-two million, five hundred ninety-one thousand, one hundred sixty-nine".