2543361 has 4 divisors (see below), whose sum is σ = 3391152. Its totient is φ = 1695572.

The previous prime is 2543351. The next prime is 2543371. The reversal of 2543361 is 1633452.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2543351) and next prime (2543371).

It is a cyclic number.

It is not a de Polignac number, because 2543361 - 2⁹ = 2542849 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2543341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423891 + ... + 423896.

It is an arithmetic number, because the mean of its divisors is an integer number (847788).

2^2543361 is an apocalyptic number.

It is an amenable number.

2543361 is a deficient number, since it is larger than the sum of its proper divisors (847791).

2543361 is an equidigital number, since it uses as much as digits as its factorization.

2543361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847790.

The product of its digits is 2160, while the sum is 24.

The square root of 2543361 is about 1594.7918359460. The cubic root of 2543361 is about 136.5010532731.

Subtracting from 2543361 its reverse (1633452), we obtain a palindrome (909909).

The spelling of 2543361 in words is "two million, five hundred forty-three thousand, three hundred sixty-one".