56403919 has 12 divisors (see below), whose sum is σ = 66631032. Its totient is φ = 47330400.

The previous prime is 56403877. The next prime is 56403929. The reversal of 56403919 is 91930465.

It is not a de Polignac number, because 56403919 - 2¹¹ = 56401871 is a prime.

It is a super-2 number, since 2×56403919² = 6362804157117122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56403929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13312 + ... + 17029.

It is an arithmetic number, because the mean of its divisors is an integer number (5552586).

Almost surely, 2^56403919 is an apocalyptic number.

56403919 is a deficient number, since it is larger than the sum of its proper divisors (10227113).

56403919 is a wasteful number, since it uses less digits than its factorization.

56403919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30378 (or 30365 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 56403919 is about 7510.2542566813. The cubic root of 56403919 is about 383.5038781567.

It can be divided in two parts, 5640 and 3919, that added together give a palindrome (9559).

The spelling of 56403919 in words is "fifty-six million, four hundred three thousand, nine hundred nineteen".