56816629 has 2 divisors, whose sum is σ = 56816630. Its totient is φ = 56816628.

The previous prime is 56816581. The next prime is 56816651. The reversal of 56816629 is 92661865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46104100 + 10712529 = 6790^2 + 3273^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56816629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56816129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28408314 + 28408315.

It is an arithmetic number, because the mean of its divisors is an integer number (28408315).

Almost surely, 2^56816629 is an apocalyptic number.

It is an amenable number.

56816629 is a deficient number, since it is larger than the sum of its proper divisors (1).

56816629 is an equidigital number, since it uses as much as digits as its factorization.

56816629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 43.

The square root of 56816629 is about 7537.6806114348. The cubic root of 56816629 is about 384.4369776809.

The spelling of 56816629 in words is "fifty-six million, eight hundred sixteen thousand, six hundred twenty-nine".