513555797 has 2 divisors, whose sum is σ = 513555798. Its totient is φ = 513555796.

The previous prime is 513555773. The next prime is 513555821. The reversal of 513555797 is 797555315.

It is a balanced prime because it is at equal distance from previous prime (513555773) and next prime (513555821).

It can be written as a sum of positive squares in only one way, i.e., 439698961 + 73856836 = 20969^2 + 8594^2 .

It is a cyclic number.

It is not a de Polignac number, because 513555797 - 2²² = 509361493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513515797) 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, 256777898 + 256777899.

It is an arithmetic number, because the mean of its divisors is an integer number (256777899).

Almost surely, 2^513555797 is an apocalyptic number.

It is an amenable number.

513555797 is a deficient number, since it is larger than the sum of its proper divisors (1).

513555797 is an equidigital number, since it uses as much as digits as its factorization.

513555797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 826875, while the sum is 47.

The square root of 513555797 is about 22661.7695028433. The cubic root of 513555797 is about 800.8094915655.

The spelling of 513555797 in words is "five hundred thirteen million, five hundred fifty-five thousand, seven hundred ninety-seven".