915485617 has 2 divisors, whose sum is σ = 915485618. Its totient is φ = 915485616.

The previous prime is 915485587. The next prime is 915485633. The reversal of 915485617 is 716584519.

915485617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 673869681 + 241615936 = 25959^2 + 15544^2 .

It is a cyclic number.

It is not a de Polignac number, because 915485617 - 2¹⁵ = 915452849 is a prime.

It is a super-2 number, since 2×915485617² = 1676227829867741378, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (915485647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 457742808 + 457742809.

It is an arithmetic number, because the mean of its divisors is an integer number (457742809).

Almost surely, 2^915485617 is an apocalyptic number.

It is an amenable number.

915485617 is a deficient number, since it is larger than the sum of its proper divisors (1).

915485617 is an equidigital number, since it uses as much as digits as its factorization.

915485617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 46.

The square root of 915485617 is about 30256.9928611553. The cubic root of 915485617 is about 970.9954060612.

The spelling of 915485617 in words is "nine hundred fifteen million, four hundred eighty-five thousand, six hundred seventeen".