455857 has 4 divisors (see below), whose sum is σ = 457216. Its totient is φ = 454500.

The previous prime is 455849. The next prime is 455863. The reversal of 455857 is 758554.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 758554 = 2 ⋅379277.

It is a cyclic number.

It is not a de Polignac number, because 455857 - 2³ = 455849 is a prime.

It is a Duffinian number.

455857 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (455827) 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 3 ways as a sum of consecutive naturals, for example, 232 + ... + 982.

It is an arithmetic number, because the mean of its divisors is an integer number (114304).

2⁴⁵⁵⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

455857 is a deficient number, since it is larger than the sum of its proper divisors (1359).

455857 is an equidigital number, since it uses as much as digits as its factorization.

455857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358.

The product of its digits is 28000, while the sum is 34.

The square root of 455857 is about 675.1718299811. The cubic root of 455857 is about 76.9619759413.

The spelling of 455857 in words is "four hundred fifty-five thousand, eight hundred fifty-seven".