11573157 has 4 divisors (see below), whose sum is σ = 15430880. Its totient is φ = 7715436.

The previous prime is 11573153. The next prime is 11573161. The reversal of 11573157 is 75137511.

11573157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75137511 = 3 ⋅25045837.

It is an interprime number because it is at equal distance from previous prime (11573153) and next prime (11573161).

It is not a de Polignac number, because 11573157 - 2² = 11573153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11573153) 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, 1928857 + ... + 1928862.

It is an arithmetic number, because the mean of its divisors is an integer number (3857720).

Almost surely, 2^11573157 is an apocalyptic number.

It is an amenable number.

11573157 is a deficient number, since it is larger than the sum of its proper divisors (3857723).

11573157 is an equidigital number, since it uses as much as digits as its factorization.

11573157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857722.

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

The square root of 11573157 is about 3401.9343027166. The cubic root of 11573157 is about 226.1954935189.

The spelling of 11573157 in words is "eleven million, five hundred seventy-three thousand, one hundred fifty-seven".