195401 has 2 divisors, whose sum is σ = 195402. Its totient is φ = 195400.

The previous prime is 195389. The next prime is 195407. The reversal of 195401 is 104591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179776 + 15625 = 424^2 + 125^2 .

It is a cyclic number.

It is not a de Polignac number, because 195401 - 2¹⁰ = 194377 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 195401.

It is not a weakly prime, because it can be changed into another prime (195407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97700 + 97701.

It is an arithmetic number, because the mean of its divisors is an integer number (97701).

2¹⁹⁵⁴⁰¹ is an apocalyptic number.

It is an amenable number.

195401 is a deficient number, since it is larger than the sum of its proper divisors (1).

195401 is an equidigital number, since it uses as much as digits as its factorization.

195401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 195401 is about 442.0418532221. The cubic root of 195401 is about 58.0286224166.

Adding to 195401 its reverse (104591), we get a palindrome (299992).

The spelling of 195401 in words is "one hundred ninety-five thousand, four hundred one".