541148221 has 2 divisors, whose sum is σ = 541148222. Its totient is φ = 541148220.

The previous prime is 541148173. The next prime is 541148239. The reversal of 541148221 is 122841145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 453051225 + 88096996 = 21285^2 + 9386^2 .

It is a cyclic number.

It is not a de Polignac number, because 541148221 - 2⁷ = 541148093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 541148221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (541148021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270574110 + 270574111.

It is an arithmetic number, because the mean of its divisors is an integer number (270574111).

Almost surely, 2^541148221 is an apocalyptic number.

It is an amenable number.

541148221 is a deficient number, since it is larger than the sum of its proper divisors (1).

541148221 is an equidigital number, since it uses as much as digits as its factorization.

541148221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2560, while the sum is 28.

The square root of 541148221 is about 23262.5927402773. The cubic root of 541148221 is about 814.9020525396.

Adding to 541148221 its reverse (122841145), we get a palindrome (663989366).

The spelling of 541148221 in words is "five hundred forty-one million, one hundred forty-eight thousand, two hundred twenty-one".