1356003 has 12 divisors (see below), whose sum is σ = 2136888. Its totient is φ = 821760.

The previous prime is 1355999. The next prime is 1356007. The reversal of 1356003 is 3006531.

It is an interprime number because it is at equal distance from previous prime (1355999) and next prime (1356007).

It is not a de Polignac number, because 1356003 - 2² = 1355999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1356007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6750 + ... + 6947.

It is an arithmetic number, because the mean of its divisors is an integer number (178074).

2^1356003 is an apocalyptic number.

1356003 is a deficient number, since it is larger than the sum of its proper divisors (780885).

1356003 is a wasteful number, since it uses less digits than its factorization.

1356003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13714 (or 13711 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 1356003 is about 1164.4754183752. The cubic root of 1356003 is about 110.6845193453.

The spelling of 1356003 in words is "one million, three hundred fifty-six thousand, three".