802857057 has 8 divisors (see below), whose sum is σ = 1070771520. Its totient is φ = 535090320.

The previous prime is 802857053. The next prime is 802857109. The reversal of 802857057 is 750758208.

It is a happy number.

802857057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 802857057 - 2² = 802857053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (802857053) 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, 23557 + ... + 46482.

It is an arithmetic number, because the mean of its divisors is an integer number (133846440).

Almost surely, 2^802857057 is an apocalyptic number.

It is an amenable number.

802857057 is a deficient number, since it is larger than the sum of its proper divisors (267914463).

802857057 is a wasteful number, since it uses less digits than its factorization.

802857057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73863.

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 802857057 is about 28334.7323438920. The cubic root of 802857057 is about 929.4215607515.

The spelling of 802857057 in words is "eight hundred two million, eight hundred fifty-seven thousand, fifty-seven".