56743213 has 2 divisors, whose sum is σ = 56743214. Its totient is φ = 56743212.

The previous prime is 56743207. The next prime is 56743249. The reversal of 56743213 is 31234765.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33143049 + 23600164 = 5757^2 + 4858^2 .

It is a cyclic number.

It is not a de Polignac number, because 56743213 - 2¹⁷ = 56612141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56743613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28371606 + 28371607.

It is an arithmetic number, because the mean of its divisors is an integer number (28371607).

Almost surely, 2^56743213 is an apocalyptic number.

It is an amenable number.

56743213 is a deficient number, since it is larger than the sum of its proper divisors (1).

56743213 is an equidigital number, since it uses as much as digits as its factorization.

56743213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 31.

The square root of 56743213 is about 7532.8091041789. The cubic root of 56743213 is about 384.2713220098.

Adding to 56743213 its reverse (31234765), we get a palindrome (87977978).

The spelling of 56743213 in words is "fifty-six million, seven hundred forty-three thousand, two hundred thirteen".