2724181 has 2 divisors, whose sum is σ = 2724182. Its totient is φ = 2724180.

The previous prime is 2724151. The next prime is 2724193. The reversal of 2724181 is 1814272.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2722500 + 1681 = 1650^2 + 41^2 .

It is a cyclic number.

It is not a de Polignac number, because 2724181 - 2⁷ = 2724053 is a prime.

It is a super-2 number, since 2×2724181² = 14842324241522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2724121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1362090 + 1362091.

It is an arithmetic number, because the mean of its divisors is an integer number (1362091).

2^2724181 is an apocalyptic number.

It is an amenable number.

2724181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2724181 is an equidigital number, since it uses as much as digits as its factorization.

2724181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 896, while the sum is 25.

The square root of 2724181 is about 1650.5093153327. The cubic root of 2724181 is about 139.6621274194.

Subtracting from 2724181 its reverse (1814272), we obtain a palindrome (909909).

The spelling of 2724181 in words is "two million, seven hundred twenty-four thousand, one hundred eighty-one".