405017273 has 2 divisors, whose sum is σ = 405017274. Its totient is φ = 405017272.

The previous prime is 405017237. The next prime is 405017293. The reversal of 405017273 is 372710504.

Together with previous prime (405017237) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236329129 + 168688144 = 15373^2 + 12988^2 .

It is a cyclic number.

It is not a de Polignac number, because 405017273 - 2²⁶ = 337908409 is a prime.

It is not a weakly prime, because it can be changed into another prime (405017203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202508636 + 202508637.

It is an arithmetic number, because the mean of its divisors is an integer number (202508637).

Almost surely, 2^405017273 is an apocalyptic number.

It is an amenable number.

405017273 is a deficient number, since it is larger than the sum of its proper divisors (1).

405017273 is an equidigital number, since it uses as much as digits as its factorization.

405017273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 405017273 is about 20125.0409440577. The cubic root of 405017273 is about 739.8741403919.

Adding to 405017273 its reverse (372710504), we get a palindrome (777727777).

It can be divided in two parts, 40501 and 7273, that added together give a palindrome (47774).

The spelling of 405017273 in words is "four hundred five million, seventeen thousand, two hundred seventy-three".