4257555 has 8 divisors (see below), whose sum is σ = 6812112. Its totient is φ = 2270688.

The previous prime is 4257551. The next prime is 4257557. The reversal of 4257555 is 5557524.

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

It is not a de Polignac number, because 4257555 - 2² = 4257551 is a prime.

4257555 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4257551) 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, 141904 + ... + 141933.

It is an arithmetic number, because the mean of its divisors is an integer number (851514).

Almost surely, 2^4257555 is an apocalyptic number.

4257555 is a deficient number, since it is larger than the sum of its proper divisors (2554557).

4257555 is a wasteful number, since it uses less digits than its factorization.

4257555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283845.

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

The square root of 4257555 is about 2063.3843558581. The cubic root of 4257555 is about 162.0765146861.

The spelling of 4257555 in words is "four million, two hundred fifty-seven thousand, five hundred fifty-five".