15255989 has 8 divisors (see below), whose sum is σ = 17514048. Its totient is φ = 13017600.

The previous prime is 15255971. The next prime is 15256009. The reversal of 15255989 is 98955251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15255989 - 2⁸ = 15255733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15255959) 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 in 7 ways as a sum of consecutive naturals, for example, 3212 + ... + 6389.

It is an arithmetic number, because the mean of its divisors is an integer number (2189256).

Almost surely, 2^15255989 is an apocalyptic number.

It is an amenable number.

15255989 is a deficient number, since it is larger than the sum of its proper divisors (2258059).

15255989 is an equidigital number, since it uses as much as digits as its factorization.

15255989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9835.

The product of its digits is 162000, while the sum is 44.

The square root of 15255989 is about 3905.8915755561. The cubic root of 15255989 is about 248.0162417823.

The spelling of 15255989 in words is "fifteen million, two hundred fifty-five thousand, nine hundred eighty-nine".