857075219 has 54 divisors (see below), whose sum is σ = 1190010204. Its totient is φ = 610122240.

The previous prime is 857075209. The next prime is 857075227. The reversal of 857075219 is 912570758.

It is not a de Polignac number, because 857075219 - 2¹⁶ = 857009683 is a prime.

It is a super-2 number, since 2×857075219² = 1469155862047795922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 857075219.

It is not an unprimeable number, because it can be changed into a prime (857075209) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 8835779 + ... + 8835875.

It is an arithmetic number, because the mean of its divisors is an integer number (22037226).

Almost surely, 2^857075219 is an apocalyptic number.

857075219 is a deficient number, since it is larger than the sum of its proper divisors (332934985).

857075219 is a wasteful number, since it uses less digits than its factorization.

857075219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 44.

The square root of 857075219 is about 29275.8470244671. The cubic root of 857075219 is about 949.8892646551.

Multiplying 857075219 by its sum of digits (44), we get a square (37711309636 = 194194²).

The spelling of 857075219 in words is "eight hundred fifty-seven million, seventy-five thousand, two hundred nineteen".