505451273 has 2 divisors, whose sum is σ = 505451274. Its totient is φ = 505451272.

The previous prime is 505451267. The next prime is 505451299. The reversal of 505451273 is 372154505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 470369344 + 35081929 = 21688^2 + 5923^2 .

It is a cyclic number.

It is not a de Polignac number, because 505451273 - 2⁴ = 505451257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (505451263) 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, 252725636 + 252725637.

It is an arithmetic number, because the mean of its divisors is an integer number (252725637).

Almost surely, 2^505451273 is an apocalyptic number.

It is an amenable number.

505451273 is a deficient number, since it is larger than the sum of its proper divisors (1).

505451273 is an equidigital number, since it uses as much as digits as its factorization.

505451273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 505451273 is about 22482.2435045971. The cubic root of 505451273 is about 796.5745585600.

The spelling of 505451273 in words is "five hundred five million, four hundred fifty-one thousand, two hundred seventy-three".