155115 has 20 divisors (see below), whose sum is σ = 278784. Its totient is φ = 82512.

The previous prime is 155087. The next prime is 155119. The reversal of 155115 is 511551.

It is not a de Polignac number, because 155115 - 2⁵ = 155083 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (155119) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 214 + ... + 596.

2¹⁵⁵¹¹⁵ is an apocalyptic number.

155115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155115 is a deficient number, since it is larger than the sum of its proper divisors (123669).

155115 is an equidigital number, since it uses as much as digits as its factorization.

155115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 391 counting only the distinct ones).

The product of its digits is 125, while the sum is 18.

The square root of 155115 is about 393.8464167667. The cubic root of 155115 is about 53.7301350786.

Adding to 155115 its reverse (511551), we get a palindrome (666666).

The spelling of 155115 in words is "one hundred fifty-five thousand, one hundred fifteen".