6520050161 has 2 divisors, whose sum is σ = 6520050162. Its totient is φ = 6520050160.

The previous prime is 6520050157. The next prime is 6520050179. The reversal of 6520050161 is 1610500256.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6110392561 + 409657600 = 78169^2 + 20240^2 .

It is a cyclic number.

It is not a de Polignac number, because 6520050161 - 2² = 6520050157 is a prime.

It is a super-2 number, since 2×6520050161² = 85022108203912251842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6520050161.

It is not a weakly prime, because it can be changed into another prime (6520050151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3260025080 + 3260025081.

It is an arithmetic number, because the mean of its divisors is an integer number (3260025081).

Almost surely, 2^6520050161 is an apocalyptic number.

It is an amenable number.

6520050161 is a deficient number, since it is larger than the sum of its proper divisors (1).

6520050161 is an equidigital number, since it uses as much as digits as its factorization.

6520050161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 6520050161 is about 80746.8275599729. The cubic root of 6520050161 is about 1868.1725176998.

The spelling of 6520050161 in words is "six billion, five hundred twenty million, fifty thousand, one hundred sixty-one".