159472717 has 2 divisors, whose sum is σ = 159472718. Its totient is φ = 159472716.

The previous prime is 159472697. The next prime is 159472723. The reversal of 159472717 is 717274951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103612041 + 55860676 = 10179^2 + 7474^2 .

It is a cyclic number.

It is not a de Polignac number, because 159472717 - 2⁷ = 159472589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159472787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79736358 + 79736359.

It is an arithmetic number, because the mean of its divisors is an integer number (79736359).

Almost surely, 2^159472717 is an apocalyptic number.

It is an amenable number.

159472717 is a deficient number, since it is larger than the sum of its proper divisors (1).

159472717 is an equidigital number, since it uses as much as digits as its factorization.

159472717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 123480, while the sum is 43.

The square root of 159472717 is about 12628.2507498070. The cubic root of 159472717 is about 542.2865060673.

The spelling of 159472717 in words is "one hundred fifty-nine million, four hundred seventy-two thousand, seven hundred seventeen".