56109233 has 2 divisors, whose sum is σ = 56109234. Its totient is φ = 56109232.

The previous prime is 56109199. The next prime is 56109239. The reversal of 56109233 is 33290165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45792289 + 10316944 = 6767^2 + 3212^2 .

It is a cyclic number.

It is not a de Polignac number, because 56109233 - 2⁶ = 56109169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56109196 and 56109205.

It is not a weakly prime, because it can be changed into another prime (56109239) 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 as a sum of consecutive naturals, namely, 28054616 + 28054617.

It is an arithmetic number, because the mean of its divisors is an integer number (28054617).

Almost surely, 2^56109233 is an apocalyptic number.

It is an amenable number.

56109233 is a deficient number, since it is larger than the sum of its proper divisors (1).

56109233 is an equidigital number, since it uses as much as digits as its factorization.

56109233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 56109233 is about 7490.6096547611. The cubic root of 56109233 is about 382.8348311938.

Adding to 56109233 its reverse (33290165), we get a palindrome (89399398).

The spelling of 56109233 in words is "fifty-six million, one hundred nine thousand, two hundred thirty-three".