857255422 has 8 divisors (see below), whose sum is σ = 1293583536. Its totient is φ = 426060912.

The previous prime is 857255417. The next prime is 857255423. The reversal of 857255422 is 224552758.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857255423) 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, 1282983 + ... + 1283650.

It is an arithmetic number, because the mean of its divisors is an integer number (161697942).

Almost surely, 2^857255422 is an apocalyptic number.

857255422 is a deficient number, since it is larger than the sum of its proper divisors (436328114).

857255422 is a wasteful number, since it uses less digits than its factorization.

857255422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566802.

The product of its digits is 224000, while the sum is 40.

The square root of 857255422 is about 29278.9245362599. The cubic root of 857255422 is about 949.9558324803.

The spelling of 857255422 in words is "eight hundred fifty-seven million, two hundred fifty-five thousand, four hundred twenty-two".