102195161 has 4 divisors (see below), whose sum is σ = 103426512. Its totient is φ = 100963812.

The previous prime is 102195157. The next prime is 102195169. The reversal of 102195161 is 161591201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161591201 = 367 ⋅440303.

It is a cyclic number.

It is not a de Polignac number, because 102195161 - 2² = 102195157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102195161.

It is not an unprimeable number, because it can be changed into a prime (102195169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615551 + ... + 615716.

It is an arithmetic number, because the mean of its divisors is an integer number (25856628).

Almost surely, 2^102195161 is an apocalyptic number.

It is an amenable number.

102195161 is a deficient number, since it is larger than the sum of its proper divisors (1231351).

102195161 is an equidigital number, since it uses as much as digits as its factorization.

102195161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231350.

The product of its (nonzero) digits is 540, while the sum is 26.

The square root of 102195161 is about 10109.1622303730. The cubic root of 102195161 is about 467.5306752537.

The spelling of 102195161 in words is "one hundred two million, one hundred ninety-five thousand, one hundred sixty-one".