541010021 has 2 divisors, whose sum is σ = 541010022. Its totient is φ = 541010020.

The previous prime is 541010011. The next prime is 541010039. The reversal of 541010021 is 120010145.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 490401025 + 50608996 = 22145^2 + 7114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-541010021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 541009978 and 541010005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (541010011) 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, 270505010 + 270505011.

It is an arithmetic number, because the mean of its divisors is an integer number (270505011).

Almost surely, 2^541010021 is an apocalyptic number.

It is an amenable number.

541010021 is a deficient number, since it is larger than the sum of its proper divisors (1).

541010021 is an equidigital number, since it uses as much as digits as its factorization.

541010021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 541010021 is about 23259.6221164489. The cubic root of 541010021 is about 814.8326759513.

Adding to 541010021 its reverse (120010145), we get a palindrome (661020166).

The spelling of 541010021 in words is "five hundred forty-one million, ten thousand, twenty-one".