6551501161 has 2 divisors, whose sum is σ = 6551501162. Its totient is φ = 6551501160.

The previous prime is 6551501119. The next prime is 6551501183. The reversal of 6551501161 is 1611051556.

6551501161 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5691193600 + 860307561 = 75440^2 + 29331^2 .

It is a cyclic number.

It is not a de Polignac number, because 6551501161 - 2¹⁵ = 6551468393 is a prime.

It is a super-3 number, since 3×6551501161³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (6551501111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275750580 + 3275750581.

It is an arithmetic number, because the mean of its divisors is an integer number (3275750581).

Almost surely, 2^6551501161 is an apocalyptic number.

It is an amenable number.

6551501161 is a deficient number, since it is larger than the sum of its proper divisors (1).

6551501161 is an equidigital number, since it uses as much as digits as its factorization.

6551501161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 31.

The square root of 6551501161 is about 80941.3439535075. The cubic root of 6551501161 is about 1871.1715576084.

The spelling of 6551501161 in words is "six billion, five hundred fifty-one million, five hundred one thousand, one hundred sixty-one".