850261 has 2 divisors, whose sum is σ = 850262. Its totient is φ = 850260.

The previous prime is 850253. The next prime is 850271. The reversal of 850261 is 162058.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 483025 + 367236 = 695^2 + 606^2 .

It is a cyclic number.

It is not a de Polignac number, because 850261 - 2³ = 850253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (850211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425130 + 425131.

It is an arithmetic number, because the mean of its divisors is an integer number (425131).

2⁸⁵⁰²⁶¹ is an apocalyptic number.

It is an amenable number.

850261 is a deficient number, since it is larger than the sum of its proper divisors (1).

850261 is an equidigital number, since it uses as much as digits as its factorization.

850261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 850261 is about 922.0959819889. The cubic root of 850261 is about 94.7365182954.

It can be divided in two parts, 850 and 261, that added together give a palindrome (1111).

The spelling of 850261 in words is "eight hundred fifty thousand, two hundred sixty-one".