115403 has 4 divisors (see below), whose sum is σ = 118560. Its totient is φ = 112248.

The previous prime is 115399. The next prime is 115421. The reversal of 115403 is 304511.

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 115403 - 2² = 115399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115303) 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, 1523 + ... + 1596.

It is an arithmetic number, because the mean of its divisors is an integer number (29640).

2¹¹⁵⁴⁰³ is an apocalyptic number.

115403 is a deficient number, since it is larger than the sum of its proper divisors (3157).

115403 is an equidigital number, since it uses as much as digits as its factorization.

115403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3156.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 115403 is about 339.7101705866. The cubic root of 115403 is about 48.6861799108.

Adding to 115403 its reverse (304511), we get a palindrome (419914).

The spelling of 115403 in words is "one hundred fifteen thousand, four hundred three".