155887 has 2 divisors, whose sum is σ = 155888. Its totient is φ = 155886.

The previous prime is 155863. The next prime is 155891. The reversal of 155887 is 788551.

155887 is nontrivially palindromic in base 12.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77943 + 77944.

It is an arithmetic number, because the mean of its divisors is an integer number (77944).

2¹⁵⁵⁸⁸⁷ is an apocalyptic number.

155887 is a deficient number, since it is larger than the sum of its proper divisors (1).

155887 is an equidigital number, since it uses as much as digits as its factorization.

155887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11200, while the sum is 34.

The square root of 155887 is about 394.8252778129. The cubic root of 155887 is about 53.8191250533.

The spelling of 155887 in words is "one hundred fifty-five thousand, eight hundred eighty-seven".