2901971 has 4 divisors (see below), whose sum is σ = 2945352. Its totient is φ = 2858592.

The previous prime is 2901931. The next prime is 2901989. The reversal of 2901971 is 1791092.

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

It is a cyclic number.

It is not a de Polignac number, because 2901971 - 2¹⁸ = 2639827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2901901) 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, 21590 + ... + 21723.

It is an arithmetic number, because the mean of its divisors is an integer number (736338).

2^2901971 is an apocalyptic number.

2901971 is a deficient number, since it is larger than the sum of its proper divisors (43381).

2901971 is an equidigital number, since it uses as much as digits as its factorization.

2901971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43380.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 2901971 is about 1703.5172438223. The cubic root of 2901971 is about 142.6366146511.

The spelling of 2901971 in words is "two million, nine hundred one thousand, nine hundred seventy-one".