11577513 has 4 divisors (see below), whose sum is σ = 15436688. Its totient is φ = 7718340.

The previous prime is 11577499. The next prime is 11577521. The reversal of 11577513 is 31577511.

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 11577513 - 2⁴ = 11577497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11577113) 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, 1929583 + ... + 1929588.

It is an arithmetic number, because the mean of its divisors is an integer number (3859172).

Almost surely, 2^11577513 is an apocalyptic number.

It is an amenable number.

11577513 is a deficient number, since it is larger than the sum of its proper divisors (3859175).

11577513 is an equidigital number, since it uses as much as digits as its factorization.

11577513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3859174.

The product of its digits is 3675, while the sum is 30.

The square root of 11577513 is about 3402.5744664886. The cubic root of 11577513 is about 226.2238690658.

It can be divided in two parts, 11577 and 513, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 11577513 in words is "eleven million, five hundred seventy-seven thousand, five hundred thirteen".