23154889 has 2 divisors, whose sum is σ = 23154890. Its totient is φ = 23154888.

The previous prime is 23154881. The next prime is 23154893. The reversal of 23154889 is 98845132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23116864 + 38025 = 4808^2 + 195^2 .

It is a cyclic number.

It is not a de Polignac number, because 23154889 - 2³ = 23154881 is a prime.

It is a super-2 number, since 2×23154889² = 1072297769204642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23154881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11577444 + 11577445.

It is an arithmetic number, because the mean of its divisors is an integer number (11577445).

Almost surely, 2^23154889 is an apocalyptic number.

It is an amenable number.

23154889 is a deficient number, since it is larger than the sum of its proper divisors (1).

23154889 is an equidigital number, since it uses as much as digits as its factorization.

23154889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 40.

The square root of 23154889 is about 4811.9527221285. The cubic root of 23154889 is about 285.0236524948.

The spelling of 23154889 in words is "twenty-three million, one hundred fifty-four thousand, eight hundred eighty-nine".