197552617 has 2 divisors, whose sum is σ = 197552618. Its totient is φ = 197552616.

The previous prime is 197552513. The next prime is 197552627. The reversal of 197552617 is 716255791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195692121 + 1860496 = 13989^2 + 1364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197552617 is a prime.

It is not a weakly prime, because it can be changed into another prime (197552627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98776308 + 98776309.

It is an arithmetic number, because the mean of its divisors is an integer number (98776309).

Almost surely, 2^197552617 is an apocalyptic number.

It is an amenable number.

197552617 is a deficient number, since it is larger than the sum of its proper divisors (1).

197552617 is an equidigital number, since it uses as much as digits as its factorization.

197552617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132300, while the sum is 43.

The square root of 197552617 is about 14055.3412267365. The cubic root of 197552617 is about 582.4083538824.

The spelling of 197552617 in words is "one hundred ninety-seven million, five hundred fifty-two thousand, six hundred seventeen".