158015717 has 4 divisors (see below), whose sum is σ = 158207616. Its totient is φ = 157823820.

The previous prime is 158015701. The next prime is 158015729. The reversal of 158015717 is 717510851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 717510851 = 19 ⋅37763729.

It is a cyclic number.

It is not a de Polignac number, because 158015717 - 2⁴ = 158015701 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 (158015777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94709 + ... + 96362.

It is an arithmetic number, because the mean of its divisors is an integer number (39551904).

Almost surely, 2^158015717 is an apocalyptic number.

It is an amenable number.

158015717 is a deficient number, since it is larger than the sum of its proper divisors (191899).

158015717 is an equidigital number, since it uses as much as digits as its factorization.

158015717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191898.

The product of its (nonzero) digits is 9800, while the sum is 35.

The square root of 158015717 is about 12570.4302631215. The cubic root of 158015717 is about 540.6299427171.

The spelling of 158015717 in words is "one hundred fifty-eight million, fifteen thousand, seven hundred seventeen".