115403155 has 32 divisors (see below), whose sum is σ = 162275328. Its totient is φ = 77155200.

The previous prime is 115403153. The next prime is 115403161. The reversal of 115403155 is 551304511.

It is a happy number.

It is not a de Polignac number, because 115403155 - 2¹ = 115403153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115403153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 407644 + ... + 407926.

It is an arithmetic number, because the mean of its divisors is an integer number (5071104).

Almost surely, 2^115403155 is an apocalyptic number.

115403155 is a deficient number, since it is larger than the sum of its proper divisors (46872173).

115403155 is a wasteful number, since it uses less digits than its factorization.

115403155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 115403155 is about 10742.5860480612. The cubic root of 115403155 is about 486.8620170796.

Adding to 115403155 its reverse (551304511), we get a palindrome (666707666).

The spelling of 115403155 in words is "one hundred fifteen million, four hundred three thousand, one hundred fifty-five".