4520857 has 16 divisors (see below), whose sum is σ = 5225472. Its totient is φ = 3871120.

The previous prime is 4520849. The next prime is 4520869. The reversal of 4520857 is 7580254.

It is not a de Polignac number, because 4520857 - 2³ = 4520849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4520807) 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 15 ways as a sum of consecutive naturals, for example, 26988 + ... + 27154.

It is an arithmetic number, because the mean of its divisors is an integer number (326592).

Almost surely, 2^4520857 is an apocalyptic number.

It is an amenable number.

4520857 is a deficient number, since it is larger than the sum of its proper divisors (704615).

4520857 is a wasteful number, since it uses less digits than its factorization.

4520857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 4520857 is about 2126.2307024404. The cubic root of 4520857 is about 165.3510371514.

It can be divided in two parts, 45 and 20857, that added together give a palindrome (20902).

The spelling of 4520857 in words is "four million, five hundred twenty thousand, eight hundred fifty-seven".