275144761 has 2 divisors, whose sum is σ = 275144762. Its totient is φ = 275144760.

The previous prime is 275144731. The next prime is 275144777. The reversal of 275144761 is 167441572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 270109225 + 5035536 = 16435^2 + 2244^2 .

It is a cyclic number.

It is not a de Polignac number, because 275144761 - 2⁵ = 275144729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 275144761.

It is not a weakly prime, because it can be changed into another prime (275144731) 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, 137572380 + 137572381.

It is an arithmetic number, because the mean of its divisors is an integer number (137572381).

Almost surely, 2^275144761 is an apocalyptic number.

It is an amenable number.

275144761 is a deficient number, since it is larger than the sum of its proper divisors (1).

275144761 is an equidigital number, since it uses as much as digits as its factorization.

275144761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 37.

The square root of 275144761 is about 16587.4880859038. The cubic root of 275144761 is about 650.4098094208.

The spelling of 275144761 in words is "two hundred seventy-five million, one hundred forty-four thousand, seven hundred sixty-one".