2972181 has 16 divisors (see below), whose sum is σ = 4147200. Its totient is φ = 1891008.

The previous prime is 2972171. The next prime is 2972183. The reversal of 2972181 is 1812792.

2972181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2972181 - 2⁵ = 2972149 is a prime.

It is a super-2 number, since 2×2972181² = 17667719793522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2972183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10915 + ... + 11183.

It is an arithmetic number, because the mean of its divisors is an integer number (259200).

2^2972181 is an apocalyptic number.

It is an amenable number.

2972181 is a deficient number, since it is larger than the sum of its proper divisors (1175019).

2972181 is a wasteful number, since it uses less digits than its factorization.

2972181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428.

The product of its digits is 2016, while the sum is 30.

The square root of 2972181 is about 1724.0014501154. The cubic root of 2972181 is about 143.7777725798. Note that the first 5 decimals are identical.

The spelling of 2972181 in words is "two million, nine hundred seventy-two thousand, one hundred eighty-one".