275439155 has 4 divisors (see below), whose sum is σ = 330526992. Its totient is φ = 220351320.

The previous prime is 275439133. The next prime is 275439173. The reversal of 275439155 is 551934572.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 275439155 - 2²² = 271244851 is a prime.

It is a super-2 number, since 2×275439155² = 151733456214228050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27543911 + ... + 27543920.

It is an arithmetic number, because the mean of its divisors is an integer number (82631748).

Almost surely, 2^275439155 is an apocalyptic number.

275439155 is a deficient number, since it is larger than the sum of its proper divisors (55087837).

275439155 is an equidigital number, since it uses as much as digits as its factorization.

275439155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55087836.

The product of its digits is 189000, while the sum is 41.

The square root of 275439155 is about 16596.3596912094. The cubic root of 275439155 is about 650.6416976511.

The spelling of 275439155 in words is "two hundred seventy-five million, four hundred thirty-nine thousand, one hundred fifty-five".