971901 has 12 divisors (see below), whose sum is σ = 1604512. Its totient is φ = 555336.

The previous prime is 971899. The next prime is 971903. The reversal of 971901 is 109179.

It is an interprime number because it is at equal distance from previous prime (971899) and next prime (971903).

It is not a de Polignac number, because 971901 - 2¹ = 971899 is a prime.

It is a Curzon number.

971901 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7651 + ... + 7776.

2⁹⁷¹⁹⁰¹ is an apocalyptic number.

It is an amenable number.

971901 is a deficient number, since it is larger than the sum of its proper divisors (632611).

971901 is a wasteful number, since it uses less digits than its factorization.

971901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15440 (or 15437 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 27.

The square root of 971901 is about 985.8503943297. The cubic root of 971901 is about 99.0544542786.

The spelling of 971901 in words is "nine hundred seventy-one thousand, nine hundred one".