541993 has 2 divisors, whose sum is σ = 541994. Its totient is φ = 541992.

The previous prime is 541991. The next prime is 541999. The reversal of 541993 is 399145.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 345744 + 196249 = 588^2 + 443^2 .

It is a cyclic number.

It is not a de Polignac number, because 541993 - 2¹ = 541991 is a prime.

Together with 541991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (541991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270996 + 270997.

It is an arithmetic number, because the mean of its divisors is an integer number (270997).

2⁵⁴¹⁹⁹³ is an apocalyptic number.

It is an amenable number.

541993 is a deficient number, since it is larger than the sum of its proper divisors (1).

541993 is an equidigital number, since it uses as much as digits as its factorization.

541993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 31.

The square root of 541993 is about 736.2017386559. The cubic root of 541993 is about 81.5325876180.

The spelling of 541993 in words is "five hundred forty-one thousand, nine hundred ninety-three".