56109203 has 4 divisors (see below), whose sum is σ = 57029088. Its totient is φ = 55189320.

The previous prime is 56109199. The next prime is 56109233. The reversal of 56109203 is 30290165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30290165 = 5 ⋅6058033.

It is a cyclic number.

It is not a de Polignac number, because 56109203 - 2² = 56109199 is a prime.

It is a super-2 number, since 2×56109203² = 6296485322590418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56109233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459851 + ... + 459972.

It is an arithmetic number, because the mean of its divisors is an integer number (14257272).

Almost surely, 2^56109203 is an apocalyptic number.

56109203 is a deficient number, since it is larger than the sum of its proper divisors (919885).

56109203 is an equidigital number, since it uses as much as digits as its factorization.

56109203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919884.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 56109203 is about 7490.6076522536. The cubic root of 56109203 is about 382.8347629635.

Adding to 56109203 its reverse (30290165), we get a palindrome (86399368).

The spelling of 56109203 in words is "fifty-six million, one hundred nine thousand, two hundred three".