275921129 has 4 divisors (see below), whose sum is σ = 301004880. Its totient is φ = 250837380.

The previous prime is 275921119. The next prime is 275921159. The reversal of 275921129 is 921129572.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-275921129 is a prime.

It is a super-2 number, since 2×275921129² = 152264938857269282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 275921092 and 275921101.

It is not an unprimeable number, because it can be changed into a prime (275921119) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12541859 + ... + 12541880.

It is an arithmetic number, because the mean of its divisors is an integer number (75251220).

Almost surely, 2^275921129 is an apocalyptic number.

It is an amenable number.

275921129 is a deficient number, since it is larger than the sum of its proper divisors (25083751).

275921129 is a wasteful number, since it uses less digits than its factorization.

275921129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25083750.

The product of its digits is 22680, while the sum is 38.

The square root of 275921129 is about 16610.8738180747. The cubic root of 275921129 is about 651.0209824424.

The spelling of 275921129 in words is "two hundred seventy-five million, nine hundred twenty-one thousand, one hundred twenty-nine".