538022549 has 2 divisors, whose sum is σ = 538022550. Its totient is φ = 538022548.

The previous prime is 538022543. The next prime is 538022581. The reversal of 538022549 is 945220835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499209649 + 38812900 = 22343^2 + 6230^2 .

It is a cyclic number.

It is not a de Polignac number, because 538022549 - 2⁸ = 538022293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538022543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269011274 + 269011275.

It is an arithmetic number, because the mean of its divisors is an integer number (269011275).

Almost surely, 2^538022549 is an apocalyptic number.

It is an amenable number.

538022549 is a deficient number, since it is larger than the sum of its proper divisors (1).

538022549 is an equidigital number, since it uses as much as digits as its factorization.

538022549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 538022549 is about 23195.3130826036. The cubic root of 538022549 is about 813.3300640191.

The spelling of 538022549 in words is "five hundred thirty-eight million, twenty-two thousand, five hundred forty-nine".