4255557 has 8 divisors (see below), whose sum is σ = 5690784. Its totient is φ = 2828688.

The previous prime is 4255553. The next prime is 4255561. The reversal of 4255557 is 7555524.

It is an interprime number because it is at equal distance from previous prime (4255553) and next prime (4255561).

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

It is not a de Polignac number, because 4255557 - 2² = 4255553 is a prime.

4255557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4255553) 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, 783 + ... + 3020.

It is an arithmetic number, because the mean of its divisors is an integer number (711348).

Almost surely, 2^4255557 is an apocalyptic number.

It is an amenable number.

4255557 is a deficient number, since it is larger than the sum of its proper divisors (1435227).

4255557 is a wasteful number, since it uses less digits than its factorization.

4255557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4179.

The product of its digits is 35000, while the sum is 33.

The square root of 4255557 is about 2062.9001430026. The cubic root of 4255557 is about 162.0511574450.

Subtracting from 4255557 its sum of digits (33), we obtain a palindrome (4255524).

The spelling of 4255557 in words is "four million, two hundred fifty-five thousand, five hundred fifty-seven".