520215097 has 2 divisors, whose sum is σ = 520215098. Its totient is φ = 520215096.

The previous prime is 520215067. The next prime is 520215103. The reversal of 520215097 is 790512025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 481539136 + 38675961 = 21944^2 + 6219^2 .

It is a cyclic number.

It is not a de Polignac number, because 520215097 - 2⁷ = 520214969 is a prime.

It is not a weakly prime, because it can be changed into another prime (520215067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260107548 + 260107549.

It is an arithmetic number, because the mean of its divisors is an integer number (260107549).

Almost surely, 2^520215097 is an apocalyptic number.

It is an amenable number.

520215097 is a deficient number, since it is larger than the sum of its proper divisors (1).

520215097 is an equidigital number, since it uses as much as digits as its factorization.

520215097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 520215097 is about 22808.2243280796. The cubic root of 520215097 is about 804.2560141317.

The spelling of 520215097 in words is "five hundred twenty million, two hundred fifteen thousand, ninety-seven".