857939055 has 8 divisors (see below), whose sum is σ = 1372702512. Its totient is φ = 457567488.

The previous prime is 857939039. The next prime is 857939057. The reversal of 857939055 is 550939758.

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

It is not a de Polignac number, because 857939055 - 2⁴ = 857939039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 857938989 and 857939007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857939057) 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, 28597954 + ... + 28597983.

It is an arithmetic number, because the mean of its divisors is an integer number (171587814).

Almost surely, 2^857939055 is an apocalyptic number.

857939055 is a deficient number, since it is larger than the sum of its proper divisors (514763457).

857939055 is a wasteful number, since it uses less digits than its factorization.

857939055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57195945.

The product of its (nonzero) digits is 1701000, while the sum is 51.

The square root of 857939055 is about 29290.5966992822. The cubic root of 857939055 is about 950.2082848940.

The spelling of 857939055 in words is "eight hundred fifty-seven million, nine hundred thirty-nine thousand, fifty-five".