2601971 has 4 divisors (see below), whose sum is σ = 2605200. Its totient is φ = 2598744.

The previous prime is 2601943. The next prime is 2601979. The reversal of 2601971 is 1791062.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2601971 - 2¹⁰ = 2600947 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 2601971.

It is not an unprimeable number, because it can be changed into a prime (2601979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725 + ... + 2393.

It is an arithmetic number, because the mean of its divisors is an integer number (651300).

2^2601971 is an apocalyptic number.

2601971 is a deficient number, since it is larger than the sum of its proper divisors (3229).

2601971 is a wasteful number, since it uses less digits than its factorization.

2601971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3228.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 2601971 is about 1613.0626150277. The cubic root of 2601971 is about 137.5416248634.

The spelling of 2601971 in words is "two million, six hundred one thousand, nine hundred seventy-one".