56221163 has 2 divisors, whose sum is σ = 56221164. Its totient is φ = 56221162.

The previous prime is 56221141. The next prime is 56221189. The reversal of 56221163 is 36112265.

It is an a-pointer prime, because the next prime (56221189) can be obtained adding 56221163 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56221163 - 2⁸ = 56220907 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (56224163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28110581 + 28110582.

It is an arithmetic number, because the mean of its divisors is an integer number (28110582).

Almost surely, 2^56221163 is an apocalyptic number.

56221163 is a deficient number, since it is larger than the sum of its proper divisors (1).

56221163 is an equidigital number, since it uses as much as digits as its factorization.

56221163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 56221163 is about 7498.0772868783. The cubic root of 56221163 is about 383.0892292563.

The spelling of 56221163 in words is "fifty-six million, two hundred twenty-one thousand, one hundred sixty-three".