15990275 has 12 divisors (see below), whose sum is σ = 22660752. Its totient is φ = 10964640.

The previous prime is 15990269. The next prime is 15990277. The reversal of 15990275 is 57209951.

It is not a de Polignac number, because 15990275 - 2¹⁰ = 15989251 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (15990277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45512 + ... + 45861.

It is an arithmetic number, because the mean of its divisors is an integer number (1888396).

Almost surely, 2^15990275 is an apocalyptic number.

15990275 is a deficient number, since it is larger than the sum of its proper divisors (6670477).

15990275 is an equidigital number, since it uses as much as digits as its factorization.

15990275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91390 (or 91385 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 38.

The square root of 15990275 is about 3998.7841902258. The cubic root of 15990275 is about 251.9331465810.

The spelling of 15990275 in words is "fifteen million, nine hundred ninety thousand, two hundred seventy-five".