275420401 has 2 divisors, whose sum is σ = 275420402. Its totient is φ = 275420400.

The previous prime is 275420363. The next prime is 275420407. The reversal of 275420401 is 104024572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206928225 + 68492176 = 14385^2 + 8276^2 .

It is a cyclic number.

It is not a de Polignac number, because 275420401 - 2⁷ = 275420273 is a prime.

It is not a weakly prime, because it can be changed into another prime (275420407) 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 as a sum of consecutive naturals, namely, 137710200 + 137710201.

It is an arithmetic number, because the mean of its divisors is an integer number (137710201).

Almost surely, 2^275420401 is an apocalyptic number.

It is an amenable number.

275420401 is a deficient number, since it is larger than the sum of its proper divisors (1).

275420401 is an equidigital number, since it uses as much as digits as its factorization.

275420401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 275420401 is about 16595.7946781707. The cubic root of 275420401 is about 650.6269304317.

Adding to 275420401 its reverse (104024572), we get a palindrome (379444973).

The spelling of 275420401 in words is "two hundred seventy-five million, four hundred twenty thousand, four hundred one".