271661133 has 4 divisors (see below), whose sum is σ = 362214848. Its totient is φ = 181107420.

The previous prime is 271661113. The next prime is 271661147. The reversal of 271661133 is 331166172.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 271661133 - 2⁵ = 271661101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 271661133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (271661113) 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 in 3 ways as a sum of consecutive naturals, for example, 45276853 + ... + 45276858.

It is an arithmetic number, because the mean of its divisors is an integer number (90553712).

Almost surely, 2^271661133 is an apocalyptic number.

It is an amenable number.

271661133 is a deficient number, since it is larger than the sum of its proper divisors (90553715).

271661133 is an equidigital number, since it uses as much as digits as its factorization.

271661133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90553714.

The product of its digits is 4536, while the sum is 30.

The square root of 271661133 is about 16482.1458857759. The cubic root of 271661133 is about 647.6531804174.

The spelling of 271661133 in words is "two hundred seventy-one million, six hundred sixty-one thousand, one hundred thirty-three".