13587157 has 2 divisors, whose sum is σ = 13587158. Its totient is φ = 13587156.

The previous prime is 13587143. The next prime is 13587163. The reversal of 13587157 is 75178531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11249316 + 2337841 = 3354^2 + 1529^2 .

It is a cyclic number.

It is not a de Polignac number, because 13587157 - 2¹¹ = 13585109 is a prime.

It is a super-2 number, since 2×13587157² = 369221670685298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13587187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6793578 + 6793579.

It is an arithmetic number, because the mean of its divisors is an integer number (6793579).

Almost surely, 2^13587157 is an apocalyptic number.

It is an amenable number.

13587157 is a deficient number, since it is larger than the sum of its proper divisors (1).

13587157 is an equidigital number, since it uses as much as digits as its factorization.

13587157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29400, while the sum is 37.

The square root of 13587157 is about 3686.0760979665. The cubic root of 13587157 is about 238.6214779341.

It can be divided in two parts, 1358 and 7157, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 13587157 in words is "thirteen million, five hundred eighty-seven thousand, one hundred fifty-seven".