945520217 has 2 divisors, whose sum is σ = 945520218. Its totient is φ = 945520216.

The previous prime is 945520193. The next prime is 945520241. The reversal of 945520217 is 712025549.

It is a balanced prime because it is at equal distance from previous prime (945520193) and next prime (945520241).

It can be written as a sum of positive squares in only one way, i.e., 677248576 + 268271641 = 26024^2 + 16379^2 .

It is a cyclic number.

It is not a de Polignac number, because 945520217 - 2⁸ = 945519961 is a prime.

It is not a weakly prime, because it can be changed into another prime (945522217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472760108 + 472760109.

It is an arithmetic number, because the mean of its divisors is an integer number (472760109).

Almost surely, 2^945520217 is an apocalyptic number.

It is an amenable number.

945520217 is a deficient number, since it is larger than the sum of its proper divisors (1).

945520217 is an equidigital number, since it uses as much as digits as its factorization.

945520217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 945520217 is about 30749.3124638584. The cubic root of 945520217 is about 981.4999303207.

The spelling of 945520217 in words is "nine hundred forty-five million, five hundred twenty thousand, two hundred seventeen".