816255229 has 4 divisors (see below), whose sum is σ = 816882976. Its totient is φ = 815627484.

The previous prime is 816255217. The next prime is 816255233. The reversal of 816255229 is 922552618.

816255229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 816255229 - 2⁹ = 816254717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 816255191 and 816255200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816255239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311919 + ... + 314524.

It is an arithmetic number, because the mean of its divisors is an integer number (204220744).

Almost surely, 2^816255229 is an apocalyptic number.

It is an amenable number.

816255229 is a deficient number, since it is larger than the sum of its proper divisors (627747).

816255229 is a wasteful number, since it uses less digits than its factorization.

816255229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627746.

The product of its digits is 86400, while the sum is 40.

The square root of 816255229 is about 28570.1807659665. The cubic root of 816255229 is about 934.5631631121.

The spelling of 816255229 in words is "eight hundred sixteen million, two hundred fifty-five thousand, two hundred twenty-nine".