56011213 has 2 divisors, whose sum is σ = 56011214. Its totient is φ = 56011212.

The previous prime is 56011211. The next prime is 56011223. The reversal of 56011213 is 31211065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55308969 + 702244 = 7437^2 + 838^2 .

It is a cyclic number.

It is not a de Polignac number, because 56011213 - 2¹ = 56011211 is a prime.

Together with 56011211, 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 (56011211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28005606 + 28005607.

It is an arithmetic number, because the mean of its divisors is an integer number (28005607).

Almost surely, 2^56011213 is an apocalyptic number.

It is an amenable number.

56011213 is a deficient number, since it is larger than the sum of its proper divisors (1).

56011213 is an equidigital number, since it uses as much as digits as its factorization.

56011213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 56011213 is about 7484.0639361245. The cubic root of 56011213 is about 382.6117702043.

Adding to 56011213 its reverse (31211065), we get a palindrome (87222278).

The spelling of 56011213 in words is "fifty-six million, eleven thousand, two hundred thirteen".