11523573 has 8 divisors (see below), whose sum is σ = 17072000. Its totient is φ = 7682364.

The previous prime is 11523559. The next prime is 11523581. The reversal of 11523573 is 37532511.

It is not a de Polignac number, because 11523573 - 2¹² = 11519477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 426799 = 11523573 / (1 + 1 + 5 + 2 + 3 + 5 + 7 + 3).

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11523553) 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 7 ways as a sum of consecutive naturals, for example, 213373 + ... + 213426.

It is an arithmetic number, because the mean of its divisors is an integer number (2134000).

Almost surely, 2^11523573 is an apocalyptic number.

It is an amenable number.

11523573 is a deficient number, since it is larger than the sum of its proper divisors (5548427).

11523573 is an equidigital number, since it uses as much as digits as its factorization.

11523573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426808 (or 426802 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 11523573 is about 3394.6388614991. The cubic root of 11523573 is about 225.8719939743.

The spelling of 11523573 in words is "eleven million, five hundred twenty-three thousand, five hundred seventy-three".