2721371 has 2 divisors, whose sum is σ = 2721372. Its totient is φ = 2721370.

The previous prime is 2721319. The next prime is 2721401. The reversal of 2721371 is 1731272.

2721371 is nontrivially palindromic in base 9.

2721371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2721371 - 2⁶ = 2721307 is a prime.

It is a Chen prime.

It is an Ulam number.

It is equal to p₁₉₈₁₀₄ and since 2721371 and 198104 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (2721671) 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 as a sum of consecutive naturals, namely, 1360685 + 1360686.

It is an arithmetic number, because the mean of its divisors is an integer number (1360686).

2^2721371 is an apocalyptic number.

2721371 is a deficient number, since it is larger than the sum of its proper divisors (1).

2721371 is an equidigital number, since it uses as much as digits as its factorization.

2721371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 588, while the sum is 23.

The square root of 2721371 is about 1649.6578433118. The cubic root of 2721371 is about 139.6140902793.

Subtracting from 2721371 its reverse (1731272), we obtain a palindrome (990099).

The spelling of 2721371 in words is "two million, seven hundred twenty-one thousand, three hundred seventy-one".