855804057 has 8 divisors (see below), whose sum is σ = 1142451840. Its totient is φ = 569846160.

The previous prime is 855804041. The next prime is 855804067. The reversal of 855804057 is 750408558.

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

It is not a de Polignac number, because 855804057 - 2⁴ = 855804041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (855804067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169569 + ... + 174542.

It is an arithmetic number, because the mean of its divisors is an integer number (142806480).

Almost surely, 2^855804057 is an apocalyptic number.

It is an amenable number.

855804057 is a deficient number, since it is larger than the sum of its proper divisors (286647783).

855804057 is a wasteful number, since it uses less digits than its factorization.

855804057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344943.

The product of its (nonzero) digits is 224000, while the sum is 42.

The square root of 855804057 is about 29254.1288880732. The cubic root of 855804057 is about 949.4194262448.

The spelling of 855804057 in words is "eight hundred fifty-five million, eight hundred four thousand, fifty-seven".