1995271 has 2 divisors, whose sum is σ = 1995272. Its totient is φ = 1995270.

The previous prime is 1995263. The next prime is 1995289. The reversal of 1995271 is 1725991.

It is a weak prime.

It is an emirp because it is prime and its reverse (1725991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1995271 - 2³ = 1995263 is a prime.

It is a super-2 number, since 2×1995271² = 7962212726882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1995211) 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, 997635 + 997636.

It is an arithmetic number, because the mean of its divisors is an integer number (997636).

2^1995271 is an apocalyptic number.

1995271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1995271 is an equidigital number, since it uses as much as digits as its factorization.

1995271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5670, while the sum is 34.

The square root of 1995271 is about 1412.5406188850. The cubic root of 1995271 is about 125.8927238420.

The spelling of 1995271 in words is "one million, nine hundred ninety-five thousand, two hundred seventy-one".