512120549 has 2 divisors, whose sum is σ = 512120550. Its totient is φ = 512120548.

The previous prime is 512120513. The next prime is 512120551. The reversal of 512120549 is 945021215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388799524 + 123321025 = 19718^2 + 11105^2 .

It is a cyclic number.

It is not a de Polignac number, because 512120549 - 2²⁰ = 511071973 is a prime.

It is a super-2 number, since 2×512120549² = 524534913416122802, which contains 22 as substring.

Together with 512120551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512120569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256060274 + 256060275.

It is an arithmetic number, because the mean of its divisors is an integer number (256060275).

Almost surely, 2^512120549 is an apocalyptic number.

It is an amenable number.

512120549 is a deficient number, since it is larger than the sum of its proper divisors (1).

512120549 is an equidigital number, since it uses as much as digits as its factorization.

512120549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 512120549 is about 22630.0806229231. The cubic root of 512120549 is about 800.0627810106.

The spelling of 512120549 in words is "five hundred twelve million, one hundred twenty thousand, five hundred forty-nine".