505165373 has 2 divisors, whose sum is σ = 505165374. Its totient is φ = 505165372.

The previous prime is 505165357. The next prime is 505165379. The reversal of 505165373 is 373561505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255936004 + 249229369 = 15998^2 + 15787^2 .

It is a cyclic number.

It is not a de Polignac number, because 505165373 - 2⁴ = 505165357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505165379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252582686 + 252582687.

It is an arithmetic number, because the mean of its divisors is an integer number (252582687).

Almost surely, 2^505165373 is an apocalyptic number.

It is an amenable number.

505165373 is a deficient number, since it is larger than the sum of its proper divisors (1).

505165373 is an equidigital number, since it uses as much as digits as its factorization.

505165373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47250, while the sum is 35.

The square root of 505165373 is about 22475.8842540177. The cubic root of 505165373 is about 796.4243405725.

The spelling of 505165373 in words is "five hundred five million, one hundred sixty-five thousand, three hundred seventy-three".