15945241 has 4 divisors (see below), whose sum is σ = 17171812. Its totient is φ = 14718672.

The previous prime is 15945229. The next prime is 15945271. The reversal of 15945241 is 14254951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14254951 = 619 ⋅23029.

It can be written as a sum of positive squares in 2 ways, for example, as 3667225 + 12278016 = 1915^2 + 3504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15945241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15945211) 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 3 ways as a sum of consecutive naturals, for example, 613266 + ... + 613291.

It is an arithmetic number, because the mean of its divisors is an integer number (4292953).

Almost surely, 2^15945241 is an apocalyptic number.

It is an amenable number.

15945241 is a deficient number, since it is larger than the sum of its proper divisors (1226571).

15945241 is a wasteful number, since it uses less digits than its factorization.

15945241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226570.

The product of its digits is 7200, while the sum is 31.

The square root of 15945241 is about 3993.1492584175. The cubic root of 15945241 is about 251.6964146718.

The spelling of 15945241 in words is "fifteen million, nine hundred forty-five thousand, two hundred forty-one".