850257 has 12 divisors (see below), whose sum is σ = 1274000. Its totient is φ = 566676.

The previous prime is 850253. The next prime is 850261. The reversal of 850257 is 752058.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (850253) and next prime (850261).

It is not a de Polignac number, because 850257 - 2² = 850253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 850257.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 850257.

It is not an unprimeable number, because it can be changed into a prime (850253) 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 11 ways as a sum of consecutive naturals, for example, 1507 + ... + 1992.

2⁸⁵⁰²⁵⁷ is an apocalyptic number.

It is an amenable number.

850257 is a deficient number, since it is larger than the sum of its proper divisors (423743).

850257 is an equidigital number, since it uses as much as digits as its factorization.

850257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3514 (or 3502 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 850257 is about 922.0938130147. The cubic root of 850257 is about 94.7363697345.

The spelling of 850257 in words is "eight hundred fifty thousand, two hundred fifty-seven".