859261 has 8 divisors (see below), whose sum is σ = 933464. Its totient is φ = 786240.

The previous prime is 859259. The next prime is 859267. The reversal of 859261 is 162958.

It can be written as a sum of positive squares in 4 ways, for example, as 60025 + 799236 = 245^2 + 894^2 .

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

It is not a de Polignac number, because 859261 - 2¹ = 859259 is a prime.

It is a super-2 number, since 2×859261² = 1476658932242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859267) 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, 1831 + ... + 2251.

It is an arithmetic number, because the mean of its divisors is an integer number (116683).

2⁸⁵⁹²⁶¹ is an apocalyptic number.

It is an amenable number.

859261 is a deficient number, since it is larger than the sum of its proper divisors (74203).

859261 is a wasteful number, since it uses less digits than its factorization.

859261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591.

The product of its digits is 4320, while the sum is 31.

The square root of 859261 is about 926.9633218202. The cubic root of 859261 is about 95.0696073420.

The spelling of 859261 in words is "eight hundred fifty-nine thousand, two hundred sixty-one".