180545081 has 2 divisors, whose sum is σ = 180545082. Its totient is φ = 180545080.

The previous prime is 180545069. The next prime is 180545111.

180545081 is nontrivially palindromic in base 10.

180545081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98823481 + 81721600 = 9941^2 + 9040^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 180545081 - 2²² = 176350777 is a prime.

It is a super-2 number, since 2×180545081² = 65193052546593122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (180545021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90272540 + 90272541.

It is an arithmetic number, because the mean of its divisors is an integer number (90272541).

Almost surely, 2^180545081 is an apocalyptic number.

It is an amenable number.

180545081 is a deficient number, since it is larger than the sum of its proper divisors (1).

180545081 is an equidigital number, since it uses as much as digits as its factorization.

180545081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 180545081 is about 13436.7064788958. The cubic root of 180545081 is about 565.1909772861.

The spelling of 180545081 in words is "one hundred eighty million, five hundred forty-five thousand, eighty-one".