13815201 has 4 divisors (see below), whose sum is σ = 18420272. Its totient is φ = 9210132.

The previous prime is 13815173. The next prime is 13815209. The reversal of 13815201 is 10251831.

13815201 is digitally balanced in base 2 and base 4, because in such bases 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 not a de Polignac number, because 13815201 - 2¹¹ = 13813153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13815209) 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, 2302531 + ... + 2302536.

It is an arithmetic number, because the mean of its divisors is an integer number (4605068).

Almost surely, 2^13815201 is an apocalyptic number.

It is an amenable number.

13815201 is a deficient number, since it is larger than the sum of its proper divisors (4605071).

13815201 is an equidigital number, since it uses as much as digits as its factorization.

13815201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4605070.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 13815201 is about 3716.8805469103. The cubic root of 13815201 is about 239.9490690537.

The spelling of 13815201 in words is "thirteen million, eight hundred fifteen thousand, two hundred one".