56643113 has 2 divisors, whose sum is σ = 56643114. Its totient is φ = 56643112.

The previous prime is 56643023. The next prime is 56643149. The reversal of 56643113 is 31134665.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45265984 + 11377129 = 6728^2 + 3373^2 .

It is a cyclic number.

It is not a de Polignac number, because 56643113 - 2¹² = 56639017 is a prime.

It is not a weakly prime, because it can be changed into another prime (56643173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28321556 + 28321557.

It is an arithmetic number, because the mean of its divisors is an integer number (28321557).

Almost surely, 2^56643113 is an apocalyptic number.

It is an amenable number.

56643113 is a deficient number, since it is larger than the sum of its proper divisors (1).

56643113 is an equidigital number, since it uses as much as digits as its factorization.

56643113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 29.

The square root of 56643113 is about 7526.1619036531. The cubic root of 56643113 is about 384.0452262451.

Adding to 56643113 its reverse (31134665), we get a palindrome (87777778).

The spelling of 56643113 in words is "fifty-six million, six hundred forty-three thousand, one hundred thirteen".