2732381 has 2 divisors, whose sum is σ = 2732382. Its totient is φ = 2732380.

The previous prime is 2732357. The next prime is 2732383. The reversal of 2732381 is 1832372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2544025 + 188356 = 1595^2 + 434^2 .

It is a cyclic number.

It is not a de Polignac number, because 2732381 - 2¹⁰ = 2731357 is a prime.

It is a super-2 number, since 2×2732381² = 14931811858322, which contains 22 as substring.

Together with 2732383, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2732381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2732383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1366190 + 1366191.

It is an arithmetic number, because the mean of its divisors is an integer number (1366191).

2^2732381 is an apocalyptic number.

It is an amenable number.

2732381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2732381 is an equidigital number, since it uses as much as digits as its factorization.

2732381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 2732381 is about 1652.9915305288. The cubic root of 2732381 is about 139.8021183972.

Subtracting from 2732381 its reverse (1832372), we obtain a palindrome (900009).

It can be divided in two parts, 2732 and 381, that added together give a palindrome (3113).

The spelling of 2732381 in words is "two million, seven hundred thirty-two thousand, three hundred eighty-one".