11601157 has 4 divisors (see below), whose sum is σ = 12283596. Its totient is φ = 10918720.

The previous prime is 11601143. The next prime is 11601181. The reversal of 11601157 is 75110611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7918596 + 3682561 = 2814^2 + 1919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11601157 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 (11601127) 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, 341194 + ... + 341227.

It is an arithmetic number, because the mean of its divisors is an integer number (3070899).

Almost surely, 2^11601157 is an apocalyptic number.

11601157 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11601157 is a deficient number, since it is larger than the sum of its proper divisors (682439).

11601157 is an equidigital number, since it uses as much as digits as its factorization.

11601157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682438.

The product of its (nonzero) digits is 210, while the sum is 22.

The square root of 11601157 is about 3406.0471223986. The cubic root of 11601157 is about 226.3777651023.

Adding to 11601157 its reverse (75110611), we get a palindrome (86711768).

The spelling of 11601157 in words is "eleven million, six hundred one thousand, one hundred fifty-seven".