505531373 has 2 divisors, whose sum is σ = 505531374. Its totient is φ = 505531372.

The previous prime is 505531357. The next prime is 505531379. The reversal of 505531373 is 373135505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 505215529 + 315844 = 22477^2 + 562^2 .

It is a cyclic number.

It is not a de Polignac number, because 505531373 - 2⁴ = 505531357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505531379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252765686 + 252765687.

It is an arithmetic number, because the mean of its divisors is an integer number (252765687).

Almost surely, 2^505531373 is an apocalyptic number.

It is an amenable number.

505531373 is a deficient number, since it is larger than the sum of its proper divisors (1).

505531373 is an equidigital number, since it uses as much as digits as its factorization.

505531373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23625, while the sum is 32.

The square root of 505531373 is about 22484.0248398724. The cubic root of 505531373 is about 796.6166346580.

Adding to 505531373 its reverse (373135505), we get a palindrome (878666878).

The spelling of 505531373 in words is "five hundred five million, five hundred thirty-one thousand, three hundred seventy-three".