23881553 has 2 divisors, whose sum is σ = 23881554. Its totient is φ = 23881552.

The previous prime is 23881523. The next prime is 23881577. The reversal of 23881553 is 35518832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23746129 + 135424 = 4873^2 + 368^2 .

It is a cyclic number.

It is not a de Polignac number, because 23881553 - 2¹⁴ = 23865169 is a prime.

It is not a weakly prime, because it can be changed into another prime (23881523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11940776 + 11940777.

It is an arithmetic number, because the mean of its divisors is an integer number (11940777).

Almost surely, 2^23881553 is an apocalyptic number.

It is an amenable number.

23881553 is a deficient number, since it is larger than the sum of its proper divisors (1).

23881553 is an equidigital number, since it uses as much as digits as its factorization.

23881553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 35.

The square root of 23881553 is about 4886.8755867118. The cubic root of 23881553 is about 287.9746031167.

The spelling of 23881553 in words is "twenty-three million, eight hundred eighty-one thousand, five hundred fifty-three".