155867 has 4 divisors (see below), whose sum is σ = 157920. Its totient is φ = 153816.

The previous prime is 155863. The next prime is 155887. The reversal of 155867 is 768551.

155867 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: 768551 = 7 ⋅109793.

It is a cyclic number.

It is not a de Polignac number, because 155867 - 2² = 155863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155861) 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, 908 + ... + 1065.

It is an arithmetic number, because the mean of its divisors is an integer number (39480).

2¹⁵⁵⁸⁶⁷ is an apocalyptic number.

155867 is a deficient number, since it is larger than the sum of its proper divisors (2053).

155867 is an equidigital number, since it uses as much as digits as its factorization.

155867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052.

The product of its digits is 8400, while the sum is 32.

The square root of 155867 is about 394.7999493414. The cubic root of 155867 is about 53.8168233251.

The spelling of 155867 in words is "one hundred fifty-five thousand, eight hundred sixty-seven".