505313293 has 2 divisors, whose sum is σ = 505313294. Its totient is φ = 505313292.

The previous prime is 505313279. The next prime is 505313311. The reversal of 505313293 is 392313505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 271162089 + 234151204 = 16467^2 + 15302^2 .

It is a cyclic number.

It is not a de Polignac number, because 505313293 - 2²¹ = 503216141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505313273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252656646 + 252656647.

It is an arithmetic number, because the mean of its divisors is an integer number (252656647).

Almost surely, 2^505313293 is an apocalyptic number.

It is an amenable number.

505313293 is a deficient number, since it is larger than the sum of its proper divisors (1).

505313293 is an equidigital number, since it uses as much as digits as its factorization.

505313293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 31.

The square root of 505313293 is about 22479.1746512188. The cubic root of 505313293 is about 796.5020679849.

Adding to 505313293 its reverse (392313505), we get a palindrome (897626798).

It can be divided in two parts, 50531 and 3293, that added together give a square (53824 = 232²).

The spelling of 505313293 in words is "five hundred five million, three hundred thirteen thousand, two hundred ninety-three".