12711157 has 4 divisors (see below), whose sum is σ = 13263840. Its totient is φ = 12158476.

The previous prime is 12711151. The next prime is 12711161. The reversal of 12711157 is 75111721.

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: 75111721 = 23 ⋅3265727.

It is a cyclic number.

It is not a de Polignac number, because 12711157 - 2¹⁹ = 12186869 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 (12711151) 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, 276307 + ... + 276352.

It is an arithmetic number, because the mean of its divisors is an integer number (3315960).

Almost surely, 2^12711157 is an apocalyptic number.

It is an amenable number.

12711157 is a deficient number, since it is larger than the sum of its proper divisors (552683).

12711157 is an equidigital number, since it uses as much as digits as its factorization.

12711157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552682.

The product of its digits is 490, while the sum is 25.

The square root of 12711157 is about 3565.2709574449. The cubic root of 12711157 is about 233.3789568383.

Adding to 12711157 its reverse (75111721), we get a palindrome (87822878).

The spelling of 12711157 in words is "twelve million, seven hundred eleven thousand, one hundred fifty-seven".