855013 has 4 divisors (see below), whose sum is σ = 858528. Its totient is φ = 851500.

The previous prime is 854999. The next prime is 855031. The reversal of 855013 is 310558.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-855013 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1363 + ... + 1888.

It is an arithmetic number, because the mean of its divisors is an integer number (214632).

2⁸⁵⁵⁰¹³ is an apocalyptic number.

It is an amenable number.

855013 is a deficient number, since it is larger than the sum of its proper divisors (3515).

855013 is a wasteful number, since it uses less digits than its factorization.

855013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3514.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 855013 is about 924.6691300135. The cubic root of 855013 is about 94.9126806143.

The spelling of 855013 in words is "eight hundred fifty-five thousand, thirteen".