275127481 has 2 divisors, whose sum is σ = 275127482. Its totient is φ = 275127480.

The previous prime is 275127451. The next prime is 275127493. The reversal of 275127481 is 184721572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251507881 + 23619600 = 15859^2 + 4860^2 .

It is a cyclic number.

It is not a de Polignac number, because 275127481 - 2¹⁷ = 274996409 is a prime.

It is a super-2 number, since 2×275127481² = 151390261602810722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 275127481.

It is not a weakly prime, because it can be changed into another prime (275127401) 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, 137563740 + 137563741.

It is an arithmetic number, because the mean of its divisors is an integer number (137563741).

Almost surely, 2^275127481 is an apocalyptic number.

It is an amenable number.

275127481 is a deficient number, since it is larger than the sum of its proper divisors (1).

275127481 is an equidigital number, since it uses as much as digits as its factorization.

275127481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31360, while the sum is 37.

The square root of 275127481 is about 16586.9672031990. The cubic root of 275127481 is about 650.3961931741.

The spelling of 275127481 in words is "two hundred seventy-five million, one hundred twenty-seven thousand, four hundred eighty-one".