4256503 has 4 divisors (see below), whose sum is σ = 4276888. Its totient is φ = 4236120.

The previous prime is 4256501. The next prime is 4256507. The reversal of 4256503 is 3056524.

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

It is a cyclic number.

It is not a de Polignac number, because 4256503 - 2¹ = 4256501 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4256501) 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 3 ways as a sum of consecutive naturals, for example, 9876 + ... + 10297.

It is an arithmetic number, because the mean of its divisors is an integer number (1069222).

Almost surely, 2^4256503 is an apocalyptic number.

4256503 is a deficient number, since it is larger than the sum of its proper divisors (20385).

4256503 is a wasteful number, since it uses less digits than its factorization.

4256503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20384.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 4256503 is about 2063.1294191107. The cubic root of 4256503 is about 162.0631644151.

The spelling of 4256503 in words is "four million, two hundred fifty-six thousand, five hundred three".