56403003 has 16 divisors (see below), whose sum is σ = 77616000. Its totient is φ = 36409920.

The previous prime is 56402993. The next prime is 56403023. The reversal of 56403003 is 30030465.

It is not a de Polignac number, because 56403003 - 2¹⁸ = 56140859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56403023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15448 + ... + 18746.

It is an arithmetic number, because the mean of its divisors is an integer number (4851000).

Almost surely, 2^56403003 is an apocalyptic number.

56403003 is a deficient number, since it is larger than the sum of its proper divisors (21212997).

56403003 is a wasteful number, since it uses less digits than its factorization.

56403003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3482.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 56403003 is about 7510.1932731455. The cubic root of 56403003 is about 383.5018021103.

Adding to 56403003 its reverse (30030465), we get a palindrome (86433468).

The spelling of 56403003 in words is "fifty-six million, four hundred three thousand, three".