513655073 has 2 divisors, whose sum is σ = 513655074. Its totient is φ = 513655072.

The previous prime is 513655069. The next prime is 513655091. The reversal of 513655073 is 370556315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 353176849 + 160478224 = 18793^2 + 12668^2 .

It is a cyclic number.

It is not a de Polignac number, because 513655073 - 2² = 513655069 is a prime.

It is not a weakly prime, because it can be changed into another prime (513655673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256827536 + 256827537.

It is an arithmetic number, because the mean of its divisors is an integer number (256827537).

Almost surely, 2^513655073 is an apocalyptic number.

It is an amenable number.

513655073 is a deficient number, since it is larger than the sum of its proper divisors (1).

513655073 is an equidigital number, since it uses as much as digits as its factorization.

513655073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47250, while the sum is 35.

The square root of 513655073 is about 22663.9597819975. The cubic root of 513655073 is about 800.8610900100.

The spelling of 513655073 in words is "five hundred thirteen million, six hundred fifty-five thousand, seventy-three".