267081161 has 2 divisors, whose sum is σ = 267081162. Its totient is φ = 267081160.

The previous prime is 267081131. The next prime is 267081167. The reversal of 267081161 is 161180762.

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., 182790400 + 84290761 = 13520^2 + 9181^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-267081161 is a prime.

It is a super-2 number, since 2×267081161² = 142664693122215842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (267081167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133540580 + 133540581.

It is an arithmetic number, because the mean of its divisors is an integer number (133540581).

Almost surely, 2^267081161 is an apocalyptic number.

It is an amenable number.

267081161 is a deficient number, since it is larger than the sum of its proper divisors (1).

267081161 is an equidigital number, since it uses as much as digits as its factorization.

267081161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 267081161 is about 16342.6179359367. The cubic root of 267081161 is about 643.9929086639.

The spelling of 267081161 in words is "two hundred sixty-seven million, eighty-one thousand, one hundred sixty-one".