155830 has 8 divisors (see below), whose sum is σ = 280512. Its totient is φ = 62328.

The previous prime is 155821. The next prime is 155833. The reversal of 155830 is 38551.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155833) 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, 7782 + ... + 7801.

It is an arithmetic number, because the mean of its divisors is an integer number (35064).

2¹⁵⁵⁸³⁰ is an apocalyptic number.

155830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155830 is a deficient number, since it is larger than the sum of its proper divisors (124682).

155830 is a wasteful number, since it uses less digits than its factorization.

155830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15590.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 155830 is about 394.7530873850. The cubic root of 155830 is about 53.8125646087.

The spelling of 155830 in words is "one hundred fifty-five thousand, eight hundred thirty".