275985403 has 4 divisors (see below), whose sum is σ = 276126840. Its totient is φ = 275843968.

The previous prime is 275985397. The next prime is 275985407. The reversal of 275985403 is 304589572.

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

It is a cyclic number.

It is not a de Polignac number, because 275985403 - 2⁵ = 275985371 is a prime.

It is a super-3 number, since 3×275985403³ (a number of 26 digits) contains 333 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 275985403.

It is not an unprimeable number, because it can be changed into a prime (275985407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67750 + ... + 71707.

It is an arithmetic number, because the mean of its divisors is an integer number (69031710).

Almost surely, 2^275985403 is an apocalyptic number.

275985403 is a deficient number, since it is larger than the sum of its proper divisors (141437).

275985403 is a wasteful number, since it uses less digits than its factorization.

275985403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141436.

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 275985403 is about 16612.8084019530. The cubic root of 275985403 is about 651.0715288601.

The spelling of 275985403 in words is "two hundred seventy-five million, nine hundred eighty-five thousand, four hundred three".