515673073 has 2 divisors, whose sum is σ = 515673074. Its totient is φ = 515673072.

The previous prime is 515673029. The next prime is 515673079. The reversal of 515673073 is 370376515.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 372798864 + 142874209 = 19308^2 + 11953^2 .

It is a cyclic number.

It is not a de Polignac number, because 515673073 - 2⁹ = 515672561 is a prime.

It is equal to p_27136729 and since 515673073 and 27136729 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (515673079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257836536 + 257836537.

It is an arithmetic number, because the mean of its divisors is an integer number (257836537).

Almost surely, 2^515673073 is an apocalyptic number.

It is an amenable number.

515673073 is a deficient number, since it is larger than the sum of its proper divisors (1).

515673073 is an equidigital number, since it uses as much as digits as its factorization.

515673073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 66150, while the sum is 37.

The square root of 515673073 is about 22708.4361636815. The cubic root of 515673073 is about 801.9085022575.

The spelling of 515673073 in words is "five hundred fifteen million, six hundred seventy-three thousand, seventy-three".