11563401 has 4 divisors (see below), whose sum is σ = 15417872. Its totient is φ = 7708932.

The previous prime is 11563397. The next prime is 11563423. The reversal of 11563401 is 10436511.

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 11563401 - 2² = 11563397 is a prime.

It is the 3401-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11563441) by changing a digit.

It is a nontrivial repunit in base 3400.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1927231 + ... + 1927236.

It is an arithmetic number, because the mean of its divisors is an integer number (3854468).

Almost surely, 2^11563401 is an apocalyptic number.

It is an amenable number.

11563401 is a deficient number, since it is larger than the sum of its proper divisors (3854471).

11563401 is an equidigital number, since it uses as much as digits as its factorization.

11563401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3854470.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 11563401 is about 3400.5001102779. The cubic root of 11563401 is about 226.1319158332.

Adding to 11563401 its reverse (10436511), we get a palindrome (21999912).

The spelling of 11563401 in words is "eleven million, five hundred sixty-three thousand, four hundred one".