275420427 has 4 divisors (see below), whose sum is σ = 367227240. Its totient is φ = 183613616.

The previous prime is 275420413. The next prime is 275420443. The reversal of 275420427 is 724024572.

It is a happy number.

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 275420427 - 2⁶ = 275420363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (275420407) 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, 45903402 + ... + 45903407.

It is an arithmetic number, because the mean of its divisors is an integer number (91806810).

Almost surely, 2^275420427 is an apocalyptic number.

275420427 is a deficient number, since it is larger than the sum of its proper divisors (91806813).

275420427 is an equidigital number, since it uses as much as digits as its factorization.

275420427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91806812.

The product of its (nonzero) digits is 31360, while the sum is 33.

The square root of 275420427 is about 16595.7954615017. The cubic root of 275420427 is about 650.6269509050.

Adding to 275420427 its reverse (724024572), we get a palindrome (999444999).

The spelling of 275420427 in words is "two hundred seventy-five million, four hundred twenty thousand, four hundred twenty-seven".