515054213 has 2 divisors, whose sum is σ = 515054214. Its totient is φ = 515054212.

The previous prime is 515054209. The next prime is 515054227. The reversal of 515054213 is 312450515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368716804 + 146337409 = 19202^2 + 12097^2 .

It is a cyclic number.

It is not a de Polignac number, because 515054213 - 2² = 515054209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (515054233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257527106 + 257527107.

It is an arithmetic number, because the mean of its divisors is an integer number (257527107).

Almost surely, 2^515054213 is an apocalyptic number.

It is an amenable number.

515054213 is a deficient number, since it is larger than the sum of its proper divisors (1).

515054213 is an equidigital number, since it uses as much as digits as its factorization.

515054213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 515054213 is about 22694.8058594913. The cubic root of 515054213 is about 801.5875833274.

The spelling of 515054213 in words is "five hundred fifteen million, fifty-four thousand, two hundred thirteen".