857902255 has 16 divisors (see below), whose sum is σ = 1198753344. Its totient is φ = 577175040.

The previous prime is 857902247. The next prime is 857902271. The reversal of 857902255 is 552209758.

857902255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 857902255 - 2³ = 857902247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229386 + ... + 233095.

It is an arithmetic number, because the mean of its divisors is an integer number (74922084).

Almost surely, 2^857902255 is an apocalyptic number.

857902255 is a deficient number, since it is larger than the sum of its proper divisors (340851089).

857902255 is a wasteful number, since it uses less digits than its factorization.

857902255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462546.

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 857902255 is about 29289.9685045921. The cubic root of 857902255 is about 950.1946987833.

The spelling of 857902255 in words is "eight hundred fifty-seven million, nine hundred two thousand, two hundred fifty-five".