499589561 has 2 divisors, whose sum is σ = 499589562. Its totient is φ = 499589560.

The previous prime is 499589549. The next prime is 499589567. The reversal of 499589561 is 165985994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 455566336 + 44023225 = 21344^2 + 6635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499589561 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 499589497 and 499589506.

It is not a weakly prime, because it can be changed into another prime (499589567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249794780 + 249794781.

It is an arithmetic number, because the mean of its divisors is an integer number (249794781).

Almost surely, 2^499589561 is an apocalyptic number.

It is an amenable number.

499589561 is a deficient number, since it is larger than the sum of its proper divisors (1).

499589561 is an equidigital number, since it uses as much as digits as its factorization.

499589561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3499200, while the sum is 56.

The square root of 499589561 is about 22351.5001957363. The cubic root of 499589561 is about 793.4832894316.

The spelling of 499589561 in words is "four hundred ninety-nine million, five hundred eighty-nine thousand, five hundred sixty-one".