56206013 has 2 divisors, whose sum is σ = 56206014. Its totient is φ = 56206012.

The previous prime is 56205991. The next prime is 56206027. The reversal of 56206013 is 31060265.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55383364 + 822649 = 7442^2 + 907^2 .

It is a cyclic number.

It is not a de Polignac number, because 56206013 - 2¹⁴ = 56189629 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56206013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56206093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28103006 + 28103007.

It is an arithmetic number, because the mean of its divisors is an integer number (28103007).

Almost surely, 2^56206013 is an apocalyptic number.

It is an amenable number.

56206013 is a deficient number, since it is larger than the sum of its proper divisors (1).

56206013 is an equidigital number, since it uses as much as digits as its factorization.

56206013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 56206013 is about 7497.0669598184. The cubic root of 56206013 is about 383.0548156244.

Adding to 56206013 its reverse (31060265), we get a palindrome (87266278).

The spelling of 56206013 in words is "fifty-six million, two hundred six thousand, thirteen".