155289 has 8 divisors (see below), whose sum is σ = 212800. Its totient is φ = 100656.

The previous prime is 155269. The next prime is 155291. The reversal of 155289 is 982551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155289 - 2⁷ = 155161 is a prime.

It is a super-2 number, since 2×155289² = 48229347042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155209) 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, 589 + ... + 810.

It is an arithmetic number, because the mean of its divisors is an integer number (26600).

2¹⁵⁵²⁸⁹ is an apocalyptic number.

It is an amenable number.

155289 is a deficient number, since it is larger than the sum of its proper divisors (57511).

155289 is a wasteful number, since it uses less digits than its factorization.

155289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439.

The product of its digits is 3600, while the sum is 30.

The square root of 155289 is about 394.0672531434. The cubic root of 155289 is about 53.7502181350.

It can be divided in two parts, 155 and 289, that added together give a palindrome (444).

The spelling of 155289 in words is "one hundred fifty-five thousand, two hundred eighty-nine".