538605569 has 2 divisors, whose sum is σ = 538605570. Its totient is φ = 538605568.

The previous prime is 538605553. The next prime is 538605581. The reversal of 538605569 is 965506835.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 517335025 + 21270544 = 22745^2 + 4612^2 .

It is a cyclic number.

It is not a de Polignac number, because 538605569 - 2⁴ = 538605553 is a prime.

It is a super-2 number, since 2×538605569² = 580191917915627522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (538605469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269302784 + 269302785.

It is an arithmetic number, because the mean of its divisors is an integer number (269302785).

Almost surely, 2^538605569 is an apocalyptic number.

It is an amenable number.

538605569 is a deficient number, since it is larger than the sum of its proper divisors (1).

538605569 is an equidigital number, since it uses as much as digits as its factorization.

538605569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972000, while the sum is 47.

The square root of 538605569 is about 23207.8773049152. The cubic root of 538605569 is about 813.6237422399.

The spelling of 538605569 in words is "five hundred thirty-eight million, six hundred five thousand, five hundred sixty-nine".