2945971 has 4 divisors (see below), whose sum is σ = 3366832. Its totient is φ = 2525112.

The previous prime is 2945959. The next prime is 2945983. The reversal of 2945971 is 1795492.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2945959) and next prime (2945983).

It is a cyclic number.

It is not a de Polignac number, because 2945971 - 2⁵ = 2945939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2945971.

It is not an unprimeable number, because it can be changed into a prime (2945941) 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, 210420 + ... + 210433.

It is an arithmetic number, because the mean of its divisors is an integer number (841708).

2^2945971 is an apocalyptic number.

2945971 is a deficient number, since it is larger than the sum of its proper divisors (420861).

2945971 is an equidigital number, since it uses as much as digits as its factorization.

2945971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420860.

The product of its digits is 22680, while the sum is 37.

The square root of 2945971 is about 1716.3831157408. The cubic root of 2945971 is about 143.3538922496.

It can be divided in two parts, 2945 and 971, that added together give a triangular number (3916 = T₈₈).

The spelling of 2945971 in words is "two million, nine hundred forty-five thousand, nine hundred seventy-one".