855531223 has 2 divisors, whose sum is σ = 855531224. Its totient is φ = 855531222.

The previous prime is 855531217. The next prime is 855531269. The reversal of 855531223 is 322135558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 855531223 - 2²⁵ = 821976791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855531203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427765611 + 427765612.

It is an arithmetic number, because the mean of its divisors is an integer number (427765612).

Almost surely, 2^855531223 is an apocalyptic number.

855531223 is a deficient number, since it is larger than the sum of its proper divisors (1).

855531223 is an equidigital number, since it uses as much as digits as its factorization.

855531223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 34.

The square root of 855531223 is about 29249.4653455409. The cubic root of 855531223 is about 949.3185225276.

The spelling of 855531223 in words is "eight hundred fifty-five million, five hundred thirty-one thousand, two hundred twenty-three".