151115 has 4 divisors (see below), whose sum is σ = 181344. Its totient is φ = 120888.

The previous prime is 151091. The next prime is 151121. The reversal of 151115 is 511151.

151115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 151115 - 2⁶ = 151051 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151115.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15107 + ... + 15116.

It is an arithmetic number, because the mean of its divisors is an integer number (45336).

2¹⁵¹¹¹⁵ is an apocalyptic number.

151115 is a deficient number, since it is larger than the sum of its proper divisors (30229).

151115 is an equidigital number, since it uses as much as digits as its factorization.

151115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30228.

The product of its digits is 25, while the sum is 14.

The square root of 151115 is about 388.7351283329. The cubic root of 151115 is about 53.2642551856.

Adding to 151115 its reverse (511151), we get a palindrome (662266).

The spelling of 151115 in words is "one hundred fifty-one thousand, one hundred fifteen".