11591057 has 4 divisors (see below), whose sum is σ = 12095040. Its totient is φ = 11087076.

The previous prime is 11591053. The next prime is 11591077. The reversal of 11591057 is 75019511.

11591057 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: 75019511 = 7 ⋅10717073.

It is a cyclic number.

It is not a de Polignac number, because 11591057 - 2² = 11591053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11591053) 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, 251957 + ... + 252002.

It is an arithmetic number, because the mean of its divisors is an integer number (3023760).

Almost surely, 2^11591057 is an apocalyptic number.

It is an amenable number.

11591057 is a deficient number, since it is larger than the sum of its proper divisors (503983).

11591057 is an equidigital number, since it uses as much as digits as its factorization.

11591057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503982.

The product of its (nonzero) digits is 1575, while the sum is 29.

The square root of 11591057 is about 3404.5641424417. The cubic root of 11591057 is about 226.3120509881.

The spelling of 11591057 in words is "eleven million, five hundred ninety-one thousand, fifty-seven".