513857447 has 2 divisors, whose sum is σ = 513857448. Its totient is φ = 513857446.

The previous prime is 513857441. The next prime is 513857471. The reversal of 513857447 is 744758315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513857447 - 2²⁸ = 245421991 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 513857398 and 513857407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513857441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256928723 + 256928724.

It is an arithmetic number, because the mean of its divisors is an integer number (256928724).

Almost surely, 2^513857447 is an apocalyptic number.

513857447 is a deficient number, since it is larger than the sum of its proper divisors (1).

513857447 is an equidigital number, since it uses as much as digits as its factorization.

513857447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470400, while the sum is 44.

The square root of 513857447 is about 22668.4240078573. The cubic root of 513857447 is about 800.9662527871.

The spelling of 513857447 in words is "five hundred thirteen million, eight hundred fifty-seven thousand, four hundred forty-seven".