275306393 has 4 divisors (see below), whose sum is σ = 275847780. Its totient is φ = 274765008.

The previous prime is 275306377. The next prime is 275306429. The reversal of 275306393 is 393603572.

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

It can be written as a sum of positive squares in 2 ways, for example, as 136702864 + 138603529 = 11692^2 + 11773^2 .

It is a cyclic number.

It is not a de Polignac number, because 275306393 - 2⁴ = 275306377 is a prime.

It is a super-2 number, since 2×275306393² = 151587220053340898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275306303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269930 + ... + 270947.

It is an arithmetic number, because the mean of its divisors is an integer number (68961945).

Almost surely, 2^275306393 is an apocalyptic number.

It is an amenable number.

275306393 is a deficient number, since it is larger than the sum of its proper divisors (541387).

275306393 is an equidigital number, since it uses as much as digits as its factorization.

275306393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541386.

The product of its (nonzero) digits is 102060, while the sum is 38.

The square root of 275306393 is about 16592.3594765784. The cubic root of 275306393 is about 650.5371441606.

The spelling of 275306393 in words is "two hundred seventy-five million, three hundred six thousand, three hundred ninety-three".