155898 has 16 divisors (see below), whose sum is σ = 346560. Its totient is φ = 51948.

The previous prime is 155893. The next prime is 155921. The reversal of 155898 is 898551.

155898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (155891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1390 + ... + 1497.

It is an arithmetic number, because the mean of its divisors is an integer number (21660).

2¹⁵⁵⁸⁹⁸ is an apocalyptic number.

155898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

155898 is an abundant number, since it is smaller than the sum of its proper divisors (190662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155898 is a wasteful number, since it uses less digits than its factorization.

155898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898 (or 2892 counting only the distinct ones).

The product of its digits is 14400, while the sum is 36.

The square root of 155898 is about 394.8392077796. The cubic root of 155898 is about 53.8203909200.

The spelling of 155898 in words is "one hundred fifty-five thousand, eight hundred ninety-eight".