56403019 has 4 divisors (see below), whose sum is σ = 56622744. Its totient is φ = 56183296.

The previous prime is 56402993. The next prime is 56403023. The reversal of 56403019 is 91030465.

56403019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 56403019 - 2⁷ = 56402891 is a prime.

It is a super-2 number, since 2×56403019² = 6362601104628722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56403049) 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, 109477 + ... + 109990.

It is an arithmetic number, because the mean of its divisors is an integer number (14155686).

Almost surely, 2^56403019 is an apocalyptic number.

56403019 is a deficient number, since it is larger than the sum of its proper divisors (219725).

56403019 is a wasteful number, since it uses less digits than its factorization.

56403019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219724.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 56403019 is about 7510.1943383644. The cubic root of 56403019 is about 383.5018383733.

The spelling of 56403019 in words is "fifty-six million, four hundred three thousand, nineteen".