2972191 has 4 divisors (see below), whose sum is σ = 2985400. Its totient is φ = 2958984.

The previous prime is 2972183. The next prime is 2972197. The reversal of 2972191 is 1912792.

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 2972191 - 2³ = 2972183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2972197) 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 3 ways as a sum of consecutive naturals, for example, 6261 + ... + 6718.

It is an arithmetic number, because the mean of its divisors is an integer number (746350).

2^2972191 is an apocalyptic number.

2972191 is a deficient number, since it is larger than the sum of its proper divisors (13209).

2972191 is a wasteful number, since it uses less digits than its factorization.

2972191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13208.

The product of its digits is 2268, while the sum is 31.

The square root of 2972191 is about 1724.0043503425. The cubic root of 2972191 is about 143.7779338279. Note that the first 3 decimals are identical.

The spelling of 2972191 in words is "two million, nine hundred seventy-two thousand, one hundred ninety-one".