275921965 has 16 divisors (see below), whose sum is σ = 361529856. Its totient is φ = 200491200.

The previous prime is 275921959. The next prime is 275921981. The reversal of 275921965 is 569129572.

It is not a de Polignac number, because 275921965 - 2²¹ = 273824813 is a prime.

It is a super-2 number, since 2×275921965² = 152265861538922450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116695 + ... + 119035.

It is an arithmetic number, because the mean of its divisors is an integer number (22595616).

Almost surely, 2^275921965 is an apocalyptic number.

It is an amenable number.

275921965 is a deficient number, since it is larger than the sum of its proper divisors (85607891).

275921965 is a wasteful number, since it uses less digits than its factorization.

275921965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4500.

The product of its digits is 340200, while the sum is 46.

The square root of 275921965 is about 16610.8989822947. The cubic root of 275921965 is about 651.0216399406.

The spelling of 275921965 in words is "two hundred seventy-five million, nine hundred twenty-one thousand, nine hundred sixty-five".