276255481 has 2 divisors, whose sum is σ = 276255482. Its totient is φ = 276255480.

The previous prime is 276255449. The next prime is 276255493. The reversal of 276255481 is 184552672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 276091456 + 164025 = 16616^2 + 405^2 .

It is a cyclic number.

It is not a de Polignac number, because 276255481 - 2⁵ = 276255449 is a prime.

It is a super-2 number, since 2×276255481² = 152634181565082722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (276255401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138127740 + 138127741.

It is an arithmetic number, because the mean of its divisors is an integer number (138127741).

Almost surely, 2^276255481 is an apocalyptic number.

It is an amenable number.

276255481 is a deficient number, since it is larger than the sum of its proper divisors (1).

276255481 is an equidigital number, since it uses as much as digits as its factorization.

276255481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 40.

The square root of 276255481 is about 16620.9350218332. The cubic root of 276255481 is about 651.2838381186.

The spelling of 276255481 in words is "two hundred seventy-six million, two hundred fifty-five thousand, four hundred eighty-one".