1971275 has 12 divisors (see below), whose sum is σ = 2529600. Its totient is φ = 1522080.

The previous prime is 1971253. The next prime is 1971289. The reversal of 1971275 is 5721791.

It is not a de Polignac number, because 1971275 - 2¹⁸ = 1709131 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 635 + ... + 2084.

It is an arithmetic number, because the mean of its divisors is an integer number (210800).

2^1971275 is an apocalyptic number.

1971275 is a deficient number, since it is larger than the sum of its proper divisors (558325).

1971275 is a wasteful number, since it uses less digits than its factorization.

1971275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758 (or 2753 counting only the distinct ones).

The product of its digits is 4410, while the sum is 32.

The square root of 1971275 is about 1404.0210112388. The cubic root of 1971275 is about 125.3860067632.

The spelling of 1971275 in words is "one million, nine hundred seventy-one thousand, two hundred seventy-five".