276538897 has 2 divisors, whose sum is σ = 276538898. Its totient is φ = 276538896.

The previous prime is 276538861. The next prime is 276538903. The reversal of 276538897 is 798835672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 267682321 + 8856576 = 16361^2 + 2976^2 .

It is a cyclic number.

It is not a de Polignac number, because 276538897 - 2¹⁵ = 276506129 is a prime.

It is not a weakly prime, because it can be changed into another prime (274538897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138269448 + 138269449.

It is an arithmetic number, because the mean of its divisors is an integer number (138269449).

Almost surely, 2^276538897 is an apocalyptic number.

It is an amenable number.

276538897 is a deficient number, since it is larger than the sum of its proper divisors (1).

276538897 is an equidigital number, since it uses as much as digits as its factorization.

276538897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 55.

The square root of 276538897 is about 16629.4587103730. The cubic root of 276538897 is about 651.5064836840.

The spelling of 276538897 in words is "two hundred seventy-six million, five hundred thirty-eight thousand, eight hundred ninety-seven".