857375851 has 2 divisors, whose sum is σ = 857375852. Its totient is φ = 857375850.

The previous prime is 857375843. The next prime is 857375863. The reversal of 857375851 is 158573758.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 857375851 - 2³ = 857375843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 857375795 and 857375804.

It is not a weakly prime, because it can be changed into another prime (857375881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428687925 + 428687926.

It is an arithmetic number, because the mean of its divisors is an integer number (428687926).

Almost surely, 2^857375851 is an apocalyptic number.

857375851 is a deficient number, since it is larger than the sum of its proper divisors (1).

857375851 is an equidigital number, since it uses as much as digits as its factorization.

857375851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1176000, while the sum is 49.

The square root of 857375851 is about 29280.9810457232. The cubic root of 857375851 is about 950.0003143120. Note that the first 3 decimals are identical.

The spelling of 857375851 in words is "eight hundred fifty-seven million, three hundred seventy-five thousand, eight hundred fifty-one".