276541381 has 2 divisors, whose sum is σ = 276541382. Its totient is φ = 276541380.

The previous prime is 276541339. The next prime is 276541417. The reversal of 276541381 is 183145672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 274200481 + 2340900 = 16559^2 + 1530^2 .

It is a cyclic number.

It is not a de Polignac number, because 276541381 - 2²⁵ = 242986949 is a prime.

It is a super-2 number, since 2×276541381² = 152950270810774322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 276541381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (276541781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138270690 + 138270691.

It is an arithmetic number, because the mean of its divisors is an integer number (138270691).

Almost surely, 2^276541381 is an apocalyptic number.

It is an amenable number.

276541381 is a deficient number, since it is larger than the sum of its proper divisors (1).

276541381 is an equidigital number, since it uses as much as digits as its factorization.

276541381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 37.

The square root of 276541381 is about 16629.5333969417. The cubic root of 276541381 is about 651.5084343888.

The spelling of 276541381 in words is "two hundred seventy-six million, five hundred forty-one thousand, three hundred eighty-one".