4257845 has 4 divisors (see below), whose sum is σ = 5109420. Its totient is φ = 3406272.

The previous prime is 4257833. The next prime is 4257889. The reversal of 4257845 is 5487524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 579121 + 3678724 = 761^2 + 1918^2 .

It is a cyclic number.

It is not a de Polignac number, because 4257845 - 2²² = 63541 is a prime.

It is a super-3 number, since 3×4257845³ (a number of 21 digits) contains 333 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425780 + ... + 425789.

It is an arithmetic number, because the mean of its divisors is an integer number (1277355).

Almost surely, 2^4257845 is an apocalyptic number.

It is an amenable number.

4257845 is a deficient number, since it is larger than the sum of its proper divisors (851575).

4257845 is an equidigital number, since it uses as much as digits as its factorization.

4257845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851574.

The product of its digits is 44800, while the sum is 35.

The square root of 4257845 is about 2063.4546275603. The cubic root of 4257845 is about 162.0801945072.

The spelling of 4257845 in words is "four million, two hundred fifty-seven thousand, eight hundred forty-five".