155847 has 4 divisors (see below), whose sum is σ = 207800. Its totient is φ = 103896.

The previous prime is 155833. The next prime is 155849. The reversal of 155847 is 748551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 748551 = 3 ⋅249517.

It is not a de Polignac number, because 155847 - 2⁶ = 155783 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 155847.

It is not an unprimeable number, because it can be changed into a prime (155849) 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, 25972 + ... + 25977.

It is an arithmetic number, because the mean of its divisors is an integer number (51950).

2¹⁵⁵⁸⁴⁷ is an apocalyptic number.

155847 is a deficient number, since it is larger than the sum of its proper divisors (51953).

155847 is an equidigital number, since it uses as much as digits as its factorization.

155847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51952.

The product of its digits is 5600, while the sum is 30.

The square root of 155847 is about 394.7746192450. The cubic root of 155847 is about 53.8145213999.

Subtracting 155847 from its reverse (748551), we obtain a cube (592704 = 84³).

The spelling of 155847 in words is "one hundred fifty-five thousand, eight hundred forty-seven".