815103 has 20 divisors (see below), whose sum is σ = 1263240. Its totient is φ = 523152.

The previous prime is 815063. The next prime is 815123. The reversal of 815103 is 301518.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-815103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815123) 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, 2176 + ... + 2522.

It is an arithmetic number, because the mean of its divisors is an integer number (63162).

2⁸¹⁵¹⁰³ is an apocalyptic number.

815103 is a deficient number, since it is larger than the sum of its proper divisors (448137).

815103 is a wasteful number, since it uses less digits than its factorization.

815103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 815103 is about 902.8305488850. The cubic root of 815103 is about 93.4123211724.

It can be divided in two parts, 81 and 5103, that added together give a square (5184 = 72²).

The spelling of 815103 in words is "eight hundred fifteen thousand, one hundred three".