6520451173 has 2 divisors, whose sum is σ = 6520451174. Its totient is φ = 6520451172.

The previous prime is 6520451159. The next prime is 6520451183. The reversal of 6520451173 is 3711540256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5580538209 + 939912964 = 74703^2 + 30658^2 .

It is a cyclic number.

It is not a de Polignac number, because 6520451173 - 2⁹ = 6520450661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6520451183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3260225586 + 3260225587.

It is an arithmetic number, because the mean of its divisors is an integer number (3260225587).

Almost surely, 2^6520451173 is an apocalyptic number.

It is an amenable number.

6520451173 is a deficient number, since it is larger than the sum of its proper divisors (1).

6520451173 is an equidigital number, since it uses as much as digits as its factorization.

6520451173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 6520451173 is about 80749.3106657883. The cubic root of 6520451173 is about 1868.2108172129.

The spelling of 6520451173 in words is "six billion, five hundred twenty million, four hundred fifty-one thousand, one hundred seventy-three".