158087285 has 4 divisors (see below), whose sum is σ = 189704748. Its totient is φ = 126469824.

The previous prime is 158087269. The next prime is 158087291. The reversal of 158087285 is 582780851.

158087285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 582780851 = 71 ⋅8208181.

It can be written as a sum of positive squares in 2 ways, for example, as 78127921 + 79959364 = 8839^2 + 8942^2 .

It is a cyclic number.

It is not a de Polignac number, because 158087285 - 2⁴ = 158087269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15808724 + ... + 15808733.

It is an arithmetic number, because the mean of its divisors is an integer number (47426187).

Almost surely, 2^158087285 is an apocalyptic number.

It is an amenable number.

158087285 is a deficient number, since it is larger than the sum of its proper divisors (31617463).

158087285 is an equidigital number, since it uses as much as digits as its factorization.

158087285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31617462.

The product of its (nonzero) digits is 179200, while the sum is 44.

The square root of 158087285 is about 12573.2766214698. The cubic root of 158087285 is about 540.7115505566.

The spelling of 158087285 in words is "one hundred fifty-eight million, eighty-seven thousand, two hundred eighty-five".