15089881 has 2 divisors, whose sum is σ = 15089882. Its totient is φ = 15089880.

The previous prime is 15089873. The next prime is 15089887. The reversal of 15089881 is 18898051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12145225 + 2944656 = 3485^2 + 1716^2 .

It is a cyclic number.

It is not a de Polignac number, because 15089881 - 2³ = 15089873 is a prime.

It is a super-2 number, since 2×15089881² = 455409017188322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15089887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7544940 + 7544941.

It is an arithmetic number, because the mean of its divisors is an integer number (7544941).

Almost surely, 2^15089881 is an apocalyptic number.

It is an amenable number.

15089881 is a deficient number, since it is larger than the sum of its proper divisors (1).

15089881 is an equidigital number, since it uses as much as digits as its factorization.

15089881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 40.

The square root of 15089881 is about 3884.5696029290. The cubic root of 15089881 is about 247.1128170562.

The spelling of 15089881 in words is "fifteen million, eighty-nine thousand, eight hundred eighty-one".