181000601 has 2 divisors, whose sum is σ = 181000602. Its totient is φ = 181000600.

The previous prime is 181000553. The next prime is 181000627. The reversal of 181000601 is 106000181.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150087001 + 30913600 = 12251^2 + 5560^2 .

It is a cyclic number.

It is not a de Polignac number, because 181000601 - 2²² = 176806297 is a prime.

It is a super-2 number, since 2×181000601² = 65522435124722402, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 181000601.

It is not a weakly prime, because it can be changed into another prime (181000681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90500300 + 90500301.

It is an arithmetic number, because the mean of its divisors is an integer number (90500301).

Almost surely, 2^181000601 is an apocalyptic number.

It is an amenable number.

181000601 is a deficient number, since it is larger than the sum of its proper divisors (1).

181000601 is an equidigital number, since it uses as much as digits as its factorization.

181000601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 181000601 is about 13453.6463830443. The cubic root of 181000601 is about 565.6659086679.

Adding to 181000601 its reverse (106000181), we get a palindrome (287000782).

The spelling of 181000601 in words is "one hundred eighty-one million, six hundred one", and thus it is an aban number.