11572913 has 4 divisors (see below), whose sum is σ = 12625008. Its totient is φ = 10520820.

The previous prime is 11572907. The next prime is 11572927. The reversal of 11572913 is 31927511.

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 11572913 - 2⁶ = 11572849 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11572963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526031 + ... + 526052.

It is an arithmetic number, because the mean of its divisors is an integer number (3156252).

Almost surely, 2^11572913 is an apocalyptic number.

It is an amenable number.

11572913 is a deficient number, since it is larger than the sum of its proper divisors (1052095).

11572913 is a wasteful number, since it uses less digits than its factorization.

11572913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052094.

The product of its digits is 1890, while the sum is 29.

The square root of 11572913 is about 3401.8984405770. The cubic root of 11572913 is about 226.1939038608.

The spelling of 11572913 in words is "eleven million, five hundred seventy-two thousand, nine hundred thirteen".