195217097 has 4 divisors (see below), whose sum is σ = 196460676. Its totient is φ = 193973520.

The previous prime is 195217093. The next prime is 195217151. The reversal of 195217097 is 790712591.

It is a happy number.

195217097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 790712591 = 3433 ⋅230327.

It can be written as a sum of positive squares in 2 ways, for example, as 148376761 + 46840336 = 12181^2 + 6844^2 .

It is a cyclic number.

It is not a de Polignac number, because 195217097 - 2² = 195217093 is a prime.

It is a super-2 number, since 2×195217097² = 76219429922214818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195217091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621554 + ... + 621867.

It is an arithmetic number, because the mean of its divisors is an integer number (49115169).

Almost surely, 2^195217097 is an apocalyptic number.

It is an amenable number.

195217097 is a deficient number, since it is larger than the sum of its proper divisors (1243579).

195217097 is a wasteful number, since it uses less digits than its factorization.

195217097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243578.

The product of its (nonzero) digits is 39690, while the sum is 41.

The square root of 195217097 is about 13972.0112009689. The cubic root of 195217097 is about 580.1041202294.

The spelling of 195217097 in words is "one hundred ninety-five million, two hundred seventeen thousand, ninety-seven".