158587951 has 4 divisors (see below), whose sum is σ = 167916672. Its totient is φ = 149259232.

The previous prime is 158587939. The next prime is 158587973. The reversal of 158587951 is 159785851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 159785851 = 1723 ⋅92737.

It is a cyclic number.

It is not a de Polignac number, because 158587951 - 2²¹ = 156490799 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 158587895 and 158587904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158587151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4664335 + ... + 4664368.

It is an arithmetic number, because the mean of its divisors is an integer number (41979168).

Almost surely, 2^158587951 is an apocalyptic number.

158587951 is a deficient number, since it is larger than the sum of its proper divisors (9328721).

158587951 is an equidigital number, since it uses as much as digits as its factorization.

158587951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9328720.

The product of its digits is 504000, while the sum is 49.

The square root of 158587951 is about 12593.1708080213. The cubic root of 158587951 is about 541.2817642483.

The spelling of 158587951 in words is "one hundred fifty-eight million, five hundred eighty-seven thousand, nine hundred fifty-one".