855269 has 2 divisors, whose sum is σ = 855270. Its totient is φ = 855268.

The previous prime is 855241. The next prime is 855271. The reversal of 855269 is 962558.

855269 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 743044 + 112225 = 862^2 + 335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-855269 is a prime.

It is a super-2 number, since 2×855269² = 1462970124722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 855271, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427634 + 427635.

It is an arithmetic number, because the mean of its divisors is an integer number (427635).

2⁸⁵⁵²⁶⁹ is an apocalyptic number.

It is an amenable number.

855269 is a deficient number, since it is larger than the sum of its proper divisors (1).

855269 is an equidigital number, since it uses as much as digits as its factorization.

855269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 35.

The square root of 855269 is about 924.8075475471. The cubic root of 855269 is about 94.9221522916.

The spelling of 855269 in words is "eight hundred fifty-five thousand, two hundred sixty-nine".