857006157 has 24 divisors (see below), whose sum is σ = 1313207616. Its totient is φ = 486995328.

The previous prime is 857006027. The next prime is 857006201. The reversal of 857006157 is 751600758.

It is not a de Polignac number, because 857006157 - 2¹⁵ = 856973389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857006957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1979013 + ... + 1979445.

It is an arithmetic number, because the mean of its divisors is an integer number (54716984).

Almost surely, 2^857006157 is an apocalyptic number.

It is an amenable number.

857006157 is a deficient number, since it is larger than the sum of its proper divisors (456201459).

857006157 is an equidigital number, since it uses as much as digits as its factorization.

857006157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 39.

The square root of 857006157 is about 29274.6674959768. The cubic root of 857006157 is about 949.8637503583.

The spelling of 857006157 in words is "eight hundred fifty-seven million, six thousand, one hundred fifty-seven".