158156587 has 2 divisors, whose sum is σ = 158156588. Its totient is φ = 158156586.

The previous prime is 158156569. The next prime is 158156641. The reversal of 158156587 is 785651851.

It is a weak prime.

It is an emirp because it is prime and its reverse (785651851) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158156587 is a prime.

It is a super-2 number, since 2×158156587² = 50027012022977138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (158156567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79078293 + 79078294.

It is an arithmetic number, because the mean of its divisors is an integer number (79078294).

Almost surely, 2^158156587 is an apocalyptic number.

158156587 is a deficient number, since it is larger than the sum of its proper divisors (1).

158156587 is an equidigital number, since it uses as much as digits as its factorization.

158156587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336000, while the sum is 46.

The square root of 158156587 is about 12576.0322439154. The cubic root of 158156587 is about 540.7905510437.

The spelling of 158156587 in words is "one hundred fifty-eight million, one hundred fifty-six thousand, five hundred eighty-seven".