13115801 has 4 divisors (see below), whose sum is σ = 13568100. Its totient is φ = 12663504.

The previous prime is 13115783. The next prime is 13115813. The reversal of 13115801 is 10851131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10851131 = 181 ⋅59951.

It can be written as a sum of positive squares in 2 ways, for example, as 3904576 + 9211225 = 1976^2 + 3035^2 .

It is a cyclic number.

It is not a de Polignac number, because 13115801 - 2⁶ = 13115737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13115831) 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, 226106 + ... + 226163.

It is an arithmetic number, because the mean of its divisors is an integer number (3392025).

Almost surely, 2^13115801 is an apocalyptic number.

It is an amenable number.

13115801 is a deficient number, since it is larger than the sum of its proper divisors (452299).

13115801 is an equidigital number, since it uses as much as digits as its factorization.

13115801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452298.

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 13115801 is about 3621.5743813982. The cubic root of 13115801 is about 235.8295774796.

Adding to 13115801 its reverse (10851131), we get a palindrome (23966932).

The spelling of 13115801 in words is "thirteen million, one hundred fifteen thousand, eight hundred one".