16771081 has 2 divisors, whose sum is σ = 16771082. Its totient is φ = 16771080.

The previous prime is 16771043. The next prime is 16771099. The reversal of 16771081 is 18017761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12531600 + 4239481 = 3540^2 + 2059^2 .

It is a cyclic number.

It is not a de Polignac number, because 16771081 - 2¹¹ = 16769033 is a prime.

It is a super-2 number, since 2×16771081² = 562538315817122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16771021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8385540 + 8385541.

It is an arithmetic number, because the mean of its divisors is an integer number (8385541).

Almost surely, 2^16771081 is an apocalyptic number.

It is an amenable number.

16771081 is a deficient number, since it is larger than the sum of its proper divisors (1).

16771081 is an equidigital number, since it uses as much as digits as its factorization.

16771081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 31.

The square root of 16771081 is about 4095.2510301568. The cubic root of 16771081 is about 255.9687919721.

The spelling of 16771081 in words is "sixteen million, seven hundred seventy-one thousand, eighty-one".