20410543 has 2 divisors, whose sum is σ = 20410544. Its totient is φ = 20410542.

The previous prime is 20410517. The next prime is 20410553. The reversal of 20410543 is 34501402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20410543 - 2⁹ = 20410031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20410543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20410513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10205271 + 10205272.

It is an arithmetic number, because the mean of its divisors is an integer number (10205272).

Almost surely, 2^20410543 is an apocalyptic number.

20410543 is a deficient number, since it is larger than the sum of its proper divisors (1).

20410543 is an equidigital number, since it uses as much as digits as its factorization.

20410543 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 20410543 is about 4517.8028952136. The cubic root of 20410543 is about 273.2865048007.

Adding to 20410543 its reverse (34501402), we get a palindrome (54911945).

The spelling of 20410543 in words is "twenty million, four hundred ten thousand, five hundred forty-three".