275405087 has 2 divisors, whose sum is σ = 275405088. Its totient is φ = 275405086.

The previous prime is 275405063. The next prime is 275405089. The reversal of 275405087 is 780504572.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 275405087 - 2¹⁴ = 275388703 is a prime.

Together with 275405089, it forms a pair of twin primes.

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 275405087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275405089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137702543 + 137702544.

It is an arithmetic number, because the mean of its divisors is an integer number (137702544).

Almost surely, 2^275405087 is an apocalyptic number.

275405087 is a deficient number, since it is larger than the sum of its proper divisors (1).

275405087 is an equidigital number, since it uses as much as digits as its factorization.

275405087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 275405087 is about 16595.3332898137. Note that the first 3 decimals coincide. The cubic root of 275405087 is about 650.6148714297.

The spelling of 275405087 in words is "two hundred seventy-five million, four hundred five thousand, eighty-seven".