56243311 has 2 divisors, whose sum is σ = 56243312. Its totient is φ = 56243310.

The previous prime is 56243309. The next prime is 56243323. The reversal of 56243311 is 11334265.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56243311 - 2¹ = 56243309 is a prime.

Together with 56243309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56243711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28121655 + 28121656.

It is an arithmetic number, because the mean of its divisors is an integer number (28121656).

Almost surely, 2^56243311 is an apocalyptic number.

56243311 is a deficient number, since it is larger than the sum of its proper divisors (1).

56243311 is an equidigital number, since it uses as much as digits as its factorization.

56243311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 56243311 is about 7499.5540534088. The cubic root of 56243311 is about 383.1395279094.

Adding to 56243311 its reverse (11334265), we get a palindrome (67577576).

The spelling of 56243311 in words is "fifty-six million, two hundred forty-three thousand, three hundred eleven".