405255241 has 4 divisors (see below), whose sum is σ = 405307012. Its totient is φ = 405203472.

The previous prime is 405255229. The next prime is 405255289. The reversal of 405255241 is 142552504.

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 279725625 + 125529616 = 16725^2 + 11204^2 .

It is a cyclic number.

It is not a de Polignac number, because 405255241 - 2⁵ = 405255209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405255841) 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 in 3 ways as a sum of consecutive naturals, for example, 11466 + ... + 30691.

It is an arithmetic number, because the mean of its divisors is an integer number (101326753).

Almost surely, 2^405255241 is an apocalyptic number.

It is an amenable number.

405255241 is a deficient number, since it is larger than the sum of its proper divisors (51771).

405255241 is an equidigital number, since it uses as much as digits as its factorization.

405255241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51770.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 405255241 is about 20130.9523122976. The cubic root of 405255241 is about 740.0190164336.

The spelling of 405255241 in words is "four hundred five million, two hundred fifty-five thousand, two hundred forty-one".