56436217 has 2 divisors, whose sum is σ = 56436218. Its totient is φ = 56436216.

The previous prime is 56436203. The next prime is 56436223. The reversal of 56436217 is 71263465.

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., 44903401 + 11532816 = 6701^2 + 3396^2 .

It is a cyclic number.

It is not a de Polignac number, because 56436217 - 2¹⁵ = 56403449 is a prime.

It is not a weakly prime, because it can be changed into another prime (56436817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28218108 + 28218109.

It is an arithmetic number, because the mean of its divisors is an integer number (28218109).

Almost surely, 2^56436217 is an apocalyptic number.

It is an amenable number.

56436217 is a deficient number, since it is larger than the sum of its proper divisors (1).

56436217 is an equidigital number, since it uses as much as digits as its factorization.

56436217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 56436217 is about 7512.4042090399. The cubic root of 56436217 is about 383.5770648253.

The spelling of 56436217 in words is "fifty-six million, four hundred thirty-six thousand, two hundred seventeen".