13561797 has 4 divisors (see below), whose sum is σ = 18082400. Its totient is φ = 9041196.

The previous prime is 13561783. The next prime is 13561829. The reversal of 13561797 is 79716531.

13561797 is digitally balanced in base 3, 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 not a de Polignac number, because 13561797 - 2¹⁰ = 13560773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13561397) 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, 2260297 + ... + 2260302.

It is an arithmetic number, because the mean of its divisors is an integer number (4520600).

Almost surely, 2^13561797 is an apocalyptic number.

It is an amenable number.

13561797 is a deficient number, since it is larger than the sum of its proper divisors (4520603).

13561797 is an equidigital number, since it uses as much as digits as its factorization.

13561797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4520602.

The product of its digits is 39690, while the sum is 39.

The square root of 13561797 is about 3682.6345189280. The cubic root of 13561797 is about 238.4729256522.

The spelling of 13561797 in words is "thirteen million, five hundred sixty-one thousand, seven hundred ninety-seven".