512545949 has 2 divisors, whose sum is σ = 512545950. Its totient is φ = 512545948.

The previous prime is 512545897. The next prime is 512545981. The reversal of 512545949 is 949545215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411684100 + 100861849 = 20290^2 + 10043^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512545949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512545049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256272974 + 256272975.

It is an arithmetic number, because the mean of its divisors is an integer number (256272975).

Almost surely, 2^512545949 is an apocalyptic number.

It is an amenable number.

512545949 is a deficient number, since it is larger than the sum of its proper divisors (1).

512545949 is an equidigital number, since it uses as much as digits as its factorization.

512545949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324000, while the sum is 44.

The square root of 512545949 is about 22639.4776662360. The cubic root of 512545949 is about 800.2842474298.

The spelling of 512545949 in words is "five hundred twelve million, five hundred forty-five thousand, nine hundred forty-nine".