275858881 has 9 divisors (see below), whose sum is σ = 293340649. Its totient is φ = 259366144.

The previous prime is 275858879. The next prime is 275858887. The reversal of 275858881 is 188858572.

The square root of 275858881 is 16609.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 148620481 + 127238400 = 12191^2 + 11280^2 .

It is not a de Polignac number, because 275858881 - 2¹ = 275858879 is a prime.

It is a super-2 number, since 2×275858881² = 152196244453144322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275858887) 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 8 ways as a sum of consecutive naturals, for example, 281865 + ... + 282841.

Almost surely, 2^275858881 is an apocalyptic number.

275858881 is the 16609-th square number.

275858881 is the 8305-th centered octagonal number.

It is an amenable number.

275858881 is a deficient number, since it is larger than the sum of its proper divisors (17481768).

275858881 is an frugal number, since it uses more digits than its factorization.

275858881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988 (or 994 counting only the distinct ones).

The product of its digits is 1433600, while the sum is 52.

The cubic root of 275858881 is about 650.9720218304.

The spelling of 275858881 in words is "two hundred seventy-five million, eight hundred fifty-eight thousand, eight hundred eighty-one".