11538573 has 4 divisors (see below), whose sum is σ = 15384768. Its totient is φ = 7692380.

The previous prime is 11538557. The next prime is 11538601. The reversal of 11538573 is 37583511.

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 11538573 - 2⁴ = 11538557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11538523) 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, 1923093 + ... + 1923098.

It is an arithmetic number, because the mean of its divisors is an integer number (3846192).

Almost surely, 2^11538573 is an apocalyptic number.

It is an amenable number.

11538573 is a deficient number, since it is larger than the sum of its proper divisors (3846195).

11538573 is an equidigital number, since it uses as much as digits as its factorization.

11538573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3846194.

The product of its digits is 12600, while the sum is 33.

The square root of 11538573 is about 3396.8475090884. The cubic root of 11538573 is about 225.9699558046.

The spelling of 11538573 in words is "eleven million, five hundred thirty-eight thousand, five hundred seventy-three".