817055 has 4 divisors (see below), whose sum is σ = 980472. Its totient is φ = 653640.

The previous prime is 817051. The next prime is 817073. The reversal of 817055 is 550718.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 817055 - 2² = 817051 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (817051) 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, 81701 + ... + 81710.

It is an arithmetic number, because the mean of its divisors is an integer number (245118).

2⁸¹⁷⁰⁵⁵ is an apocalyptic number.

817055 is a deficient number, since it is larger than the sum of its proper divisors (163417).

817055 is a wasteful number, since it uses less digits than its factorization.

817055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163416.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 817055 is about 903.9109469411. The cubic root of 817055 is about 93.4868293382.

The spelling of 817055 in words is "eight hundred seventeen thousand, fifty-five".