505117373 has 4 divisors (see below), whose sum is σ = 505607388. Its totient is φ = 504627360.

The previous prime is 505117369. The next prime is 505117381. The reversal of 505117373 is 373711505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 373711505 = 5 ⋅74742301.

It can be written as a sum of positive squares in 2 ways, for example, as 376476409 + 128640964 = 19403^2 + 11342^2 .

It is a cyclic number.

It is not a de Polignac number, because 505117373 - 2² = 505117369 is a prime.

It is a super-2 number, since 2×505117373² = 510287121012842258, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505117573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243458 + ... + 245523.

It is an arithmetic number, because the mean of its divisors is an integer number (126401847).

Almost surely, 2^505117373 is an apocalyptic number.

It is an amenable number.

505117373 is a deficient number, since it is larger than the sum of its proper divisors (490015).

505117373 is a wasteful number, since it uses less digits than its factorization.

505117373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490014.

The product of its (nonzero) digits is 11025, while the sum is 32.

The square root of 505117373 is about 22474.8164174927. The cubic root of 505117373 is about 796.3991147875.

Adding to 505117373 its reverse (373711505), we get a palindrome (878828878).

The spelling of 505117373 in words is "five hundred five million, one hundred seventeen thousand, three hundred seventy-three".