12586157 has 4 divisors (see below), whose sum is σ = 12617340. Its totient is φ = 12554976.

The previous prime is 12586141. The next prime is 12586163. The reversal of 12586157 is 75168521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75168521 = 31 ⋅2424791.

It can be written as a sum of positive squares in 2 ways, for example, as 6405961 + 6180196 = 2531^2 + 2486^2 .

It is a cyclic number.

It is not a de Polignac number, because 12586157 - 2⁴ = 12586141 is a prime.

It is a super-2 number, since 2×12586157² = 316822696057298, 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 (12586657) 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, 14978 + ... + 15795.

It is an arithmetic number, because the mean of its divisors is an integer number (3154335).

Almost surely, 2^12586157 is an apocalyptic number.

It is an amenable number.

12586157 is a deficient number, since it is larger than the sum of its proper divisors (31183).

12586157 is an equidigital number, since it uses as much as digits as its factorization.

12586157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31182.

The product of its digits is 16800, while the sum is 35.

The square root of 12586157 is about 3547.6974222726. The cubic root of 12586157 is about 232.6114284549.

The spelling of 12586157 in words is "twelve million, five hundred eighty-six thousand, one hundred fifty-seven".