855003 has 8 divisors (see below), whose sum is σ = 1151488. Its totient is φ = 564264.

The previous prime is 854999. The next prime is 855031. The reversal of 855003 is 300558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 855003 - 2² = 854999 is a prime.

It is a Duffinian number.

855003 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (855203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1075 + ... + 1692.

It is an arithmetic number, because the mean of its divisors is an integer number (143936).

2⁸⁵⁵⁰⁰³ is an apocalyptic number.

855003 is a deficient number, since it is larger than the sum of its proper divisors (296485).

855003 is a wasteful number, since it uses less digits than its factorization.

855003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 855003 is about 924.6637226581. The cubic root of 855003 is about 94.9123105886.

The spelling of 855003 in words is "eight hundred fifty-five thousand, three".