275010991 has 2 divisors, whose sum is σ = 275010992. Its totient is φ = 275010990.

The previous prime is 275010971. The next prime is 275011001. The reversal of 275010991 is 199010572.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-275010991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275010971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137505495 + 137505496.

It is an arithmetic number, because the mean of its divisors is an integer number (137505496).

Almost surely, 2^275010991 is an apocalyptic number.

275010991 is a deficient number, since it is larger than the sum of its proper divisors (1).

275010991 is an equidigital number, since it uses as much as digits as its factorization.

275010991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 275010991 is about 16583.4553395847. The cubic root of 275010991 is about 650.3043868258.

The spelling of 275010991 in words is "two hundred seventy-five million, ten thousand, nine hundred ninety-one".