857055590 has 16 divisors (see below), whose sum is σ = 1543268160. Its totient is φ = 342696000.

The previous prime is 857055587. The next prime is 857055613. The reversal of 857055590 is 95550758.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15731 + ... + 44289.

It is an arithmetic number, because the mean of its divisors is an integer number (96454260).

Almost surely, 2^857055590 is an apocalyptic number.

857055590 is a deficient number, since it is larger than the sum of its proper divisors (686212570).

857055590 is a wasteful number, since it uses less digits than its factorization.

857055590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31567.

The product of its (nonzero) digits is 315000, while the sum is 44.

The square root of 857055590 is about 29275.5117803259. The cubic root of 857055590 is about 949.8820130478.

The spelling of 857055590 in words is "eight hundred fifty-seven million, fifty-five thousand, five hundred ninety".