157865287 has 2 divisors, whose sum is σ = 157865288. Its totient is φ = 157865286.

The previous prime is 157865251. The next prime is 157865311. The reversal of 157865287 is 782568751.

157865287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157865287 - 2⁷ = 157865159 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157865287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157865207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78932643 + 78932644.

It is an arithmetic number, because the mean of its divisors is an integer number (78932644).

Almost surely, 2^157865287 is an apocalyptic number.

157865287 is a deficient number, since it is larger than the sum of its proper divisors (1).

157865287 is an equidigital number, since it uses as much as digits as its factorization.

157865287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 940800, while the sum is 49.

The square root of 157865287 is about 12564.4453518649. The cubic root of 157865287 is about 540.4583294433.

The spelling of 157865287 in words is "one hundred fifty-seven million, eight hundred sixty-five thousand, two hundred eighty-seven".