15801241 has 4 divisors (see below), whose sum is σ = 15824484. Its totient is φ = 15778000.

The previous prime is 15801223. The next prime is 15801271. The reversal of 15801241 is 14210851.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13111641 + 2689600 = 3621^2 + 1640^2 .

It is a cyclic number.

It is not a de Polignac number, because 15801241 - 2⁵ = 15801209 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15801271) 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, 10570 + ... + 11971.

It is an arithmetic number, because the mean of its divisors is an integer number (3956121).

Almost surely, 2^15801241 is an apocalyptic number.

It is an amenable number.

15801241 is a deficient number, since it is larger than the sum of its proper divisors (23243).

15801241 is an equidigital number, since it uses as much as digits as its factorization.

15801241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23242.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 15801241 is about 3975.0774835215. The cubic root of 15801241 is about 250.9364399413.

The spelling of 15801241 in words is "fifteen million, eight hundred one thousand, two hundred forty-one".