89520217 has 2 divisors, whose sum is σ = 89520218. Its totient is φ = 89520216.

The previous prime is 89520161. The next prime is 89520253. The reversal of 89520217 is 71202598.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63059481 + 26460736 = 7941^2 + 5144^2 .

It is a cyclic number.

It is not a de Polignac number, because 89520217 - 2¹⁵ = 89487449 is a prime.

It is equal to p_5190919 and since 89520217 and 5190919 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (89520257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44760108 + 44760109.

It is an arithmetic number, because the mean of its divisors is an integer number (44760109).

Almost surely, 2^89520217 is an apocalyptic number.

It is an amenable number.

89520217 is a deficient number, since it is larger than the sum of its proper divisors (1).

89520217 is an equidigital number, since it uses as much as digits as its factorization.

89520217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 89520217 is about 9461.5124055301. The cubic root of 89520217 is about 447.3427213800.

It can be divided in two parts, 895 and 20217, that added together give a palindrome (21112).

The spelling of 89520217 in words is "eighty-nine million, five hundred twenty thousand, two hundred seventeen".