56401217 has 2 divisors, whose sum is σ = 56401218. Its totient is φ = 56401216.

The previous prime is 56401211. The next prime is 56401231. The reversal of 56401217 is 71210465.

56401217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52070656 + 4330561 = 7216^2 + 2081^2 .

It is a cyclic number.

It is not a de Polignac number, because 56401217 - 2⁶ = 56401153 is a prime.

It is not a weakly prime, because it can be changed into another prime (56401211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28200608 + 28200609.

It is an arithmetic number, because the mean of its divisors is an integer number (28200609).

Almost surely, 2^56401217 is an apocalyptic number.

It is an amenable number.

56401217 is a deficient number, since it is larger than the sum of its proper divisors (1).

56401217 is an equidigital number, since it uses as much as digits as its factorization.

56401217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 56401217 is about 7510.0743671418. The cubic root of 56401217 is about 383.4977542086.

The spelling of 56401217 in words is "fifty-six million, four hundred one thousand, two hundred seventeen".