541552321 has 2 divisors, whose sum is σ = 541552322. Its totient is φ = 541552320.

The previous prime is 541552309. The next prime is 541552331. The reversal of 541552321 is 123255145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303282225 + 238270096 = 17415^2 + 15436^2 .

It is a cyclic number.

It is not a de Polignac number, because 541552321 - 2⁹ = 541551809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 541552321.

It is not a weakly prime, because it can be changed into another prime (541552331) 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, 270776160 + 270776161.

It is an arithmetic number, because the mean of its divisors is an integer number (270776161).

Almost surely, 2^541552321 is an apocalyptic number.

It is an amenable number.

541552321 is a deficient number, since it is larger than the sum of its proper divisors (1).

541552321 is an equidigital number, since it uses as much as digits as its factorization.

541552321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6000, while the sum is 28.

The square root of 541552321 is about 23271.2767376438. The cubic root of 541552321 is about 815.1048435510.

The spelling of 541552321 in words is "five hundred forty-one million, five hundred fifty-two thousand, three hundred twenty-one".