56403203 has 4 divisors (see below), whose sum is σ = 56530968. Its totient is φ = 56275440.

The previous prime is 56403169. The next prime is 56403239. The reversal of 56403203 is 30230465.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30230465 = 5 ⋅6046093.

It is a cyclic number.

It is not a de Polignac number, because 56403203 - 2⁸ = 56402947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56403293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63218 + ... + 64103.

It is an arithmetic number, because the mean of its divisors is an integer number (14132742).

Almost surely, 2^56403203 is an apocalyptic number.

56403203 is a deficient number, since it is larger than the sum of its proper divisors (127765).

56403203 is a wasteful number, since it uses less digits than its factorization.

56403203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127764.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 56403203 is about 7510.2065883703. The cubic root of 56403203 is about 383.5022553975.

Adding to 56403203 its reverse (30230465), we get a palindrome (86633668).

The spelling of 56403203 in words is "fifty-six million, four hundred three thousand, two hundred three".