548621413 has 2 divisors, whose sum is σ = 548621414. Its totient is φ = 548621412.

The previous prime is 548621387. The next prime is 548621417. The reversal of 548621413 is 314126845.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 548590084 + 31329 = 23422^2 + 177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-548621413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (548621417) 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, 274310706 + 274310707.

It is an arithmetic number, because the mean of its divisors is an integer number (274310707).

Almost surely, 2^548621413 is an apocalyptic number.

It is an amenable number.

548621413 is a deficient number, since it is larger than the sum of its proper divisors (1).

548621413 is an equidigital number, since it uses as much as digits as its factorization.

548621413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 34.

The square root of 548621413 is about 23422.6687847478. The cubic root of 548621413 is about 818.6361489770.

The spelling of 548621413 in words is "five hundred forty-eight million, six hundred twenty-one thousand, four hundred thirteen".