115021603 has 4 divisors (see below), whose sum is σ = 117696568. Its totient is φ = 112346640.

The previous prime is 115021561. The next prime is 115021651. The reversal of 115021603 is 306120511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 306120511 = 4001 ⋅76511.

It is a cyclic number.

It is not a de Polignac number, because 115021603 - 2²⁵ = 81467171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115024603) 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, 1337418 + ... + 1337503.

It is an arithmetic number, because the mean of its divisors is an integer number (29424142).

Almost surely, 2^115021603 is an apocalyptic number.

115021603 is a deficient number, since it is larger than the sum of its proper divisors (2674965).

115021603 is an equidigital number, since it uses as much as digits as its factorization.

115021603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2674964.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 115021603 is about 10724.8124925334. The cubic root of 115021603 is about 486.3248616905.

The spelling of 115021603 in words is "one hundred fifteen million, twenty-one thousand, six hundred three".