275402191 has 2 divisors, whose sum is σ = 275402192. Its totient is φ = 275402190.

The previous prime is 275402177. The next prime is 275402201. The reversal of 275402191 is 191204572.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 275402191 - 2²³ = 267013583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275408191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137701095 + 137701096.

It is an arithmetic number, because the mean of its divisors is an integer number (137701096).

Almost surely, 2^275402191 is an apocalyptic number.

275402191 is a deficient number, since it is larger than the sum of its proper divisors (1).

275402191 is an equidigital number, since it uses as much as digits as its factorization.

275402191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 275402191 is about 16595.2460361394. The cubic root of 275402191 is about 650.6125909256.

The spelling of 275402191 in words is "two hundred seventy-five million, four hundred two thousand, one hundred ninety-one".