856222543 has 8 divisors (see below), whose sum is σ = 934359120. Its totient is φ = 778135680.

The previous prime is 856222531. The next prime is 856222553. The reversal of 856222543 is 345222658.

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

It is a cyclic number.

It is not a de Polignac number, because 856222543 - 2¹³ = 856214351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856222553) 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, 29863 + ... + 51031.

It is an arithmetic number, because the mean of its divisors is an integer number (116794890).

Almost surely, 2^856222543 is an apocalyptic number.

856222543 is a deficient number, since it is larger than the sum of its proper divisors (78136577).

856222543 is a wasteful number, since it uses less digits than its factorization.

856222543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24857.

The product of its digits is 115200, while the sum is 37.

The square root of 856222543 is about 29261.2806110737. The cubic root of 856222543 is about 949.5741555857.

The spelling of 856222543 in words is "eight hundred fifty-six million, two hundred twenty-two thousand, five hundred forty-three".