158135287 has 4 divisors (see below), whose sum is σ = 158171400. Its totient is φ = 158099176.

The previous prime is 158135261. The next prime is 158135291. The reversal of 158135287 is 782531851.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 158135287 - 2²⁷ = 23917559 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 (158135297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10408 + ... + 20605.

It is an arithmetic number, because the mean of its divisors is an integer number (39542850).

Almost surely, 2^158135287 is an apocalyptic number.

158135287 is a deficient number, since it is larger than the sum of its proper divisors (36113).

158135287 is an equidigital number, since it uses as much as digits as its factorization.

158135287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36112.

The product of its digits is 67200, while the sum is 40.

The square root of 158135287 is about 12575.1853664270. The cubic root of 158135287 is about 540.7662726663.

The spelling of 158135287 in words is "one hundred fifty-eight million, one hundred thirty-five thousand, two hundred eighty-seven".