15967265 has 4 divisors (see below), whose sum is σ = 19160724. Its totient is φ = 12773808.

The previous prime is 15967253. The next prime is 15967271. The reversal of 15967265 is 56276951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56276951 = 331 ⋅170021.

It can be written as a sum of positive squares in 2 ways, for example, as 8059921 + 7907344 = 2839^2 + 2812^2 .

It is a cyclic number.

It is not a de Polignac number, because 15967265 - 2¹⁰ = 15966241 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1596722 + ... + 1596731.

It is an arithmetic number, because the mean of its divisors is an integer number (4790181).

Almost surely, 2^15967265 is an apocalyptic number.

It is an amenable number.

15967265 is a deficient number, since it is larger than the sum of its proper divisors (3193459).

15967265 is an equidigital number, since it uses as much as digits as its factorization.

15967265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193458.

The product of its digits is 113400, while the sum is 41.

The square root of 15967265 is about 3995.9060299261. The cubic root of 15967265 is about 251.8122446673.

The spelling of 15967265 in words is "fifteen million, nine hundred sixty-seven thousand, two hundred sixty-five".