541540421 has 2 divisors, whose sum is σ = 541540422. Its totient is φ = 541540420.

The previous prime is 541540367. The next prime is 541540453. The reversal of 541540421 is 124045145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388523521 + 153016900 = 19711^2 + 12370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-541540421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (541540471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270770210 + 270770211.

It is an arithmetic number, because the mean of its divisors is an integer number (270770211).

Almost surely, 2^541540421 is an apocalyptic number.

It is an amenable number.

541540421 is a deficient number, since it is larger than the sum of its proper divisors (1).

541540421 is an equidigital number, since it uses as much as digits as its factorization.

541540421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 541540421 is about 23271.0210562407. The cubic root of 541540421 is about 815.0988731715.

Adding to 541540421 its reverse (124045145), we get a palindrome (665585566).

The spelling of 541540421 in words is "five hundred forty-one million, five hundred forty thousand, four hundred twenty-one".