275661097 has 2 divisors, whose sum is σ = 275661098. Its totient is φ = 275661096.

The previous prime is 275661091. The next prime is 275661107. The reversal of 275661097 is 790166572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223084096 + 52577001 = 14936^2 + 7251^2 .

It is a cyclic number.

It is not a de Polignac number, because 275661097 - 2¹⁹ = 275136809 is a prime.

It is not a weakly prime, because it can be changed into another prime (275661091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137830548 + 137830549.

It is an arithmetic number, because the mean of its divisors is an integer number (137830549).

Almost surely, 2^275661097 is an apocalyptic number.

It is an amenable number.

275661097 is a deficient number, since it is larger than the sum of its proper divisors (1).

275661097 is an equidigital number, since it uses as much as digits as its factorization.

275661097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 275661097 is about 16603.0448111182. The cubic root of 275661097 is about 650.8164076836.

The spelling of 275661097 in words is "two hundred seventy-five million, six hundred sixty-one thousand, ninety-seven".