15915201 has 4 divisors (see below), whose sum is σ = 21220272. Its totient is φ = 10610132.

The previous prime is 15915181. The next prime is 15915209. The reversal of 15915201 is 10251951.

15915201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15915201 - 2⁵ = 15915169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15915209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2652531 + ... + 2652536.

It is an arithmetic number, because the mean of its divisors is an integer number (5305068).

Almost surely, 2^15915201 is an apocalyptic number.

It is an amenable number.

15915201 is a deficient number, since it is larger than the sum of its proper divisors (5305071).

15915201 is an equidigital number, since it uses as much as digits as its factorization.

15915201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5305070.

The product of its (nonzero) digits is 450, while the sum is 24.

The square root of 15915201 is about 3989.3860429896. The cubic root of 15915201 is about 251.5382543483.

The spelling of 15915201 in words is "fifteen million, nine hundred fifteen thousand, two hundred one".