56641217 has 4 divisors (see below), whose sum is σ = 56733636. Its totient is φ = 56548800.

The previous prime is 56641201. The next prime is 56641219. The reversal of 56641217 is 71214665.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10523536 + 46117681 = 3244^2 + 6791^2 .

It is a cyclic number.

It is not a de Polignac number, because 56641217 - 2⁴ = 56641201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56641219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45284 + ... + 46517.

It is an arithmetic number, because the mean of its divisors is an integer number (14183409).

Almost surely, 2^56641217 is an apocalyptic number.

It is an amenable number.

56641217 is a deficient number, since it is larger than the sum of its proper divisors (92419).

56641217 is an equidigital number, since it uses as much as digits as its factorization.

56641217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92418.

The product of its digits is 10080, while the sum is 32.

The square root of 56641217 is about 7526.0359419817. The cubic root of 56641217 is about 384.0409411824.

The spelling of 56641217 in words is "fifty-six million, six hundred forty-one thousand, two hundred seventeen".