11513751 has 4 divisors (see below), whose sum is σ = 15351672. Its totient is φ = 7675832.

The previous prime is 11513729. The next prime is 11513797. The reversal of 11513751 is 15731511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11513751 - 2⁶ = 11513687 is a prime.

It is a super-3 number, since 3×11513751³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11513851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1918956 + ... + 1918961.

It is an arithmetic number, because the mean of its divisors is an integer number (3837918).

Almost surely, 2^11513751 is an apocalyptic number.

11513751 is a deficient number, since it is larger than the sum of its proper divisors (3837921).

11513751 is an equidigital number, since it uses as much as digits as its factorization.

11513751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3837920.

The product of its digits is 525, while the sum is 24.

The square root of 11513751 is about 3393.1918601812. The cubic root of 11513751 is about 225.8078025026.

The spelling of 11513751 in words is "eleven million, five hundred thirteen thousand, seven hundred fifty-one".