275851081 has 20 divisors (see below), whose sum is σ = 308442960. Its totient is φ = 246660920.

The previous prime is 275851039. The next prime is 275851087. The reversal of 275851081 is 180158572.

It is the 6781-st star number.

It is not a de Polignac number, because 275851081 - 2¹¹ = 275849033 is a prime.

It is a super-2 number, since 2×275851081² = 152187637777737122, which contains 22 as substring.

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 275851081.

It is not an unprimeable number, because it can be changed into a prime (275851087) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1215090 + ... + 1215316.

It is an arithmetic number, because the mean of its divisors is an integer number (15422148).

Almost surely, 2^275851081 is an apocalyptic number.

It is an amenable number.

275851081 is a deficient number, since it is larger than the sum of its proper divisors (32591879).

275851081 is an frugal number, since it uses more digits than its factorization.

275851081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 37.

The square root of 275851081 is about 16608.7651858890. The cubic root of 275851081 is about 650.9658862904.

The spelling of 275851081 in words is "two hundred seventy-five million, eight hundred fifty-one thousand, eighty-one".