267540061 has 2 divisors, whose sum is σ = 267540062. Its totient is φ = 267540060.

The previous prime is 267540041. The next prime is 267540073. The reversal of 267540061 is 160045762.

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., 171872100 + 95667961 = 13110^2 + 9781^2 .

It is a cyclic number.

It is not a de Polignac number, because 267540061 - 2⁵ = 267540029 is a prime.

It is a super-3 number, since 3×267540061³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (267540041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133770030 + 133770031.

It is an arithmetic number, because the mean of its divisors is an integer number (133770031).

Almost surely, 2^267540061 is an apocalyptic number.

It is an amenable number.

267540061 is a deficient number, since it is larger than the sum of its proper divisors (1).

267540061 is an equidigital number, since it uses as much as digits as its factorization.

267540061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 267540061 is about 16356.6518884520. The cubic root of 267540061 is about 644.3615347483.

The spelling of 267540061 in words is "two hundred sixty-seven million, five hundred forty thousand, sixty-one".