513345473 has 2 divisors, whose sum is σ = 513345474. Its totient is φ = 513345472.

The previous prime is 513345467. The next prime is 513345493. The reversal of 513345473 is 374543315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 477728449 + 35617024 = 21857^2 + 5968^2 .

It is a cyclic number.

It is not a de Polignac number, because 513345473 - 2¹² = 513341377 is a prime.

It is not a weakly prime, because it can be changed into another prime (513345433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256672736 + 256672737.

It is an arithmetic number, because the mean of its divisors is an integer number (256672737).

Almost surely, 2^513345473 is an apocalyptic number.

It is an amenable number.

513345473 is a deficient number, since it is larger than the sum of its proper divisors (1).

513345473 is an equidigital number, since it uses as much as digits as its factorization.

513345473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 35.

The square root of 513345473 is about 22657.1285250360. The cubic root of 513345473 is about 800.7001542388.

Adding to 513345473 its reverse (374543315), we get a palindrome (887888788).

The spelling of 513345473 in words is "five hundred thirteen million, three hundred forty-five thousand, four hundred seventy-three".