2043541 has 2 divisors, whose sum is σ = 2043542. Its totient is φ = 2043540.

The previous prime is 2043539. The next prime is 2043571. The reversal of 2043541 is 1453402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1918225 + 125316 = 1385^2 + 354^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043541 - 2¹ = 2043539 is a prime.

Together with 2043539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2043511) 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 as a sum of consecutive naturals, namely, 1021770 + 1021771.

It is an arithmetic number, because the mean of its divisors is an integer number (1021771).

2^2043541 is an apocalyptic number.

It is an amenable number.

2043541 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043541 is an equidigital number, since it uses as much as digits as its factorization.

2043541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2043541 is about 1429.5247462006. The cubic root of 2043541 is about 126.8998528486.

Adding to 2043541 its reverse (1453402), we get a palindrome (3496943).

The spelling of 2043541 in words is "two million, forty-three thousand, five hundred forty-one".