4520257 has 4 divisors (see below), whose sum is σ = 5166016. Its totient is φ = 3874500.

The previous prime is 4520239. The next prime is 4520261. The reversal of 4520257 is 7520254.

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.

It is not a de Polignac number, because 4520257 - 2⁷ = 4520129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4520227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322869 + ... + 322882.

It is an arithmetic number, because the mean of its divisors is an integer number (1291504).

Almost surely, 2^4520257 is an apocalyptic number.

It is an amenable number.

4520257 is a deficient number, since it is larger than the sum of its proper divisors (645759).

4520257 is an equidigital number, since it uses as much as digits as its factorization.

4520257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645758.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 4520257 is about 2126.0896030036. The cubic root of 4520257 is about 165.3437217971.

It can be divided in two parts, 45 and 20257, that added together give a palindrome (20302).

The spelling of 4520257 in words is "four million, five hundred twenty thousand, two hundred fifty-seven".