13205801 has 4 divisors (see below), whose sum is σ = 15092352. Its totient is φ = 11319252.

The previous prime is 13205791. The next prime is 13205809. The reversal of 13205801 is 10850231.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10850231 = 7 ⋅1550033.

It is not a de Polignac number, because 13205801 - 2⁶ = 13205737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13205809) 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, 943265 + ... + 943278.

It is an arithmetic number, because the mean of its divisors is an integer number (3773088).

Almost surely, 2^13205801 is an apocalyptic number.

It is an amenable number.

13205801 is a deficient number, since it is larger than the sum of its proper divisors (1886551).

13205801 is an equidigital number, since it uses as much as digits as its factorization.

13205801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886550.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 13205801 is about 3633.9786735753. The cubic root of 13205801 is about 236.3677654425.

The spelling of 13205801 in words is "thirteen million, two hundred five thousand, eight hundred one".