2543061 has 4 divisors (see below), whose sum is σ = 3390752. Its totient is φ = 1695372.

The previous prime is 2543059. The next prime is 2543111. The reversal of 2543061 is 1603452.

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 not a de Polignac number, because 2543061 - 2¹ = 2543059 is a prime.

It is a D-number.

It is a Duffinian number.

2543061 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423841 + ... + 423846.

It is an arithmetic number, because the mean of its divisors is an integer number (847688).

2^2543061 is an apocalyptic number.

It is an amenable number.

2543061 is a deficient number, since it is larger than the sum of its proper divisors (847691).

2543061 is an equidigital number, since it uses as much as digits as its factorization.

2543061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847690.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2543061 is about 1594.6977770098. The cubic root of 2543061 is about 136.4956861066.

The spelling of 2543061 in words is "two million, five hundred forty-three thousand, sixty-one".