22983581 has 2 divisors, whose sum is σ = 22983582. Its totient is φ = 22983580.

The previous prime is 22983563. The next prime is 22983589. The reversal of 22983581 is 18538922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11868025 + 11115556 = 3445^2 + 3334^2 .

It is a cyclic number.

It is not a de Polignac number, because 22983581 - 2¹⁸ = 22721437 is a prime.

It is a super-2 number, since 2×22983581² = 1056489991167122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22983589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11491790 + 11491791.

It is an arithmetic number, because the mean of its divisors is an integer number (11491791).

Almost surely, 2^22983581 is an apocalyptic number.

It is an amenable number.

22983581 is a deficient number, since it is larger than the sum of its proper divisors (1).

22983581 is an equidigital number, since it uses as much as digits as its factorization.

22983581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 38.

The square root of 22983581 is about 4794.1194186211. The cubic root of 22983581 is about 284.3190102064.

The spelling of 22983581 in words is "twenty-two million, nine hundred eighty-three thousand, five hundred eighty-one".