537642569 has 2 divisors, whose sum is σ = 537642570. Its totient is φ = 537642568.

The previous prime is 537642529. The next prime is 537642577. The reversal of 537642569 is 965246735.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 534534400 + 3108169 = 23120^2 + 1763^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-537642569 is a prime.

It is a super-2 number, since 2×537642569² = 578119064001839522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (537642529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268821284 + 268821285.

It is an arithmetic number, because the mean of its divisors is an integer number (268821285).

Almost surely, 2^537642569 is an apocalyptic number.

It is an amenable number.

537642569 is a deficient number, since it is larger than the sum of its proper divisors (1).

537642569 is an equidigital number, since it uses as much as digits as its factorization.

537642569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 47.

The square root of 537642569 is about 23187.1207570065. The cubic root of 537642569 is about 813.1385466793.

The spelling of 537642569 in words is "five hundred thirty-seven million, six hundred forty-two thousand, five hundred sixty-nine".