11513761 has 4 divisors (see below), whose sum is σ = 13158592. Its totient is φ = 9868932.

The previous prime is 11513729. The next prime is 11513797. The reversal of 11513761 is 16731511.

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 a cyclic number.

It is not a de Polignac number, because 11513761 - 2⁵ = 11513729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11513461) 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, 822405 + ... + 822418.

It is an arithmetic number, because the mean of its divisors is an integer number (3289648).

Almost surely, 2^11513761 is an apocalyptic number.

It is an amenable number.

11513761 is a deficient number, since it is larger than the sum of its proper divisors (1644831).

11513761 is an equidigital number, since it uses as much as digits as its factorization.

11513761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644830.

The product of its digits is 630, while the sum is 25.

The square root of 11513761 is about 3393.1933337197. The cubic root of 11513761 is about 225.8078678759.

The spelling of 11513761 in words is "eleven million, five hundred thirteen thousand, seven hundred sixty-one".