156859 has 4 divisors (see below), whose sum is σ = 166104. Its totient is φ = 147616.

The previous prime is 156841. The next prime is 156887. The reversal of 156859 is 958651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 958651 = 97 ⋅9883.

It is a cyclic number.

It is not a de Polignac number, because 156859 - 2⁹ = 156347 is a prime.

It is a super-3 number, since 3×156859³ = 11578427502443337, which contains 333 as substring.

It is a Duffinian number.

156859 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (156899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4597 + ... + 4630.

It is an arithmetic number, because the mean of its divisors is an integer number (41526).

2¹⁵⁶⁸⁵⁹ is an apocalyptic number.

156859 is a deficient number, since it is larger than the sum of its proper divisors (9245).

156859 is an equidigital number, since it uses as much as digits as its factorization.

156859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9244.

The product of its digits is 10800, while the sum is 34.

The square root of 156859 is about 396.0542892079. The cubic root of 156859 is about 53.9307525730.

The spelling of 156859 in words is "one hundred fifty-six thousand, eight hundred fifty-nine".