22159541 has 2 divisors, whose sum is σ = 22159542. Its totient is φ = 22159540.

The previous prime is 22159493. The next prime is 22159547. The reversal of 22159541 is 14595122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20884900 + 1274641 = 4570^2 + 1129^2 .

It is a cyclic number.

It is not a de Polignac number, because 22159541 - 2¹⁸ = 21897397 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22159547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11079770 + 11079771.

It is an arithmetic number, because the mean of its divisors is an integer number (11079771).

Almost surely, 2^22159541 is an apocalyptic number.

It is an amenable number.

22159541 is a deficient number, since it is larger than the sum of its proper divisors (1).

22159541 is an equidigital number, since it uses as much as digits as its factorization.

22159541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 29.

The square root of 22159541 is about 4707.3921655201. The cubic root of 22159541 is about 280.8796358910.

The spelling of 22159541 in words is "twenty-two million, one hundred fifty-nine thousand, five hundred forty-one".