513224989 has 2 divisors, whose sum is σ = 513224990. Its totient is φ = 513224988.

The previous prime is 513224867. The next prime is 513225047. The reversal of 513224989 is 989422315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 469068964 + 44156025 = 21658^2 + 6645^2 .

It is a cyclic number.

It is not a de Polignac number, because 513224989 - 2¹³ = 513216797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513224389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256612494 + 256612495.

It is an arithmetic number, because the mean of its divisors is an integer number (256612495).

Almost surely, 2^513224989 is an apocalyptic number.

It is an amenable number.

513224989 is a deficient number, since it is larger than the sum of its proper divisors (1).

513224989 is an equidigital number, since it uses as much as digits as its factorization.

513224989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 43.

The square root of 513224989 is about 22654.4695148662. The cubic root of 513224989 is about 800.6375069503.

The spelling of 513224989 in words is "five hundred thirteen million, two hundred twenty-four thousand, nine hundred eighty-nine".