11727157 has 4 divisors (see below), whose sum is σ = 12629260. Its totient is φ = 10825056.

The previous prime is 11727143. The next prime is 11727173. The reversal of 11727157 is 75172711.

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 531441 + 11195716 = 729^2 + 3346^2 .

It is a cyclic number.

It is not a de Polignac number, because 11727157 - 2²³ = 3338549 is a prime.

It is a super-2 number, since 2×11727157² = 275052422605298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11727137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451032 + ... + 451057.

It is an arithmetic number, because the mean of its divisors is an integer number (3157315).

Almost surely, 2^11727157 is an apocalyptic number.

It is an amenable number.

11727157 is a deficient number, since it is larger than the sum of its proper divisors (902103).

11727157 is an equidigital number, since it uses as much as digits as its factorization.

11727157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902102.

The product of its digits is 3430, while the sum is 31.

The square root of 11727157 is about 3424.4936852037. The cubic root of 11727157 is about 227.1943776815.

Adding to 11727157 its reverse (75172711), we get a palindrome (86899868).

The spelling of 11727157 in words is "eleven million, seven hundred twenty-seven thousand, one hundred fifty-seven".