505499293 has 4 divisors (see below), whose sum is σ = 544383868. Its totient is φ = 466614720.

The previous prime is 505499287. The next prime is 505499303. The reversal of 505499293 is 392994505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 392994505 = 5 ⋅78598901.

It can be written as a sum of positive squares in 2 ways, for example, as 273637764 + 231861529 = 16542^2 + 15227^2 .

It is not a de Polignac number, because 505499293 - 2¹⁷ = 505368221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505499273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19442268 + ... + 19442293.

It is an arithmetic number, because the mean of its divisors is an integer number (136095967).

Almost surely, 2^505499293 is an apocalyptic number.

It is an amenable number.

505499293 is a deficient number, since it is larger than the sum of its proper divisors (38884575).

505499293 is a wasteful number, since it uses less digits than its factorization.

505499293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38884574.

The product of its (nonzero) digits is 437400, while the sum is 46.

The square root of 505499293 is about 22483.3114331497. The cubic root of 505499293 is about 796.5997837406.

The spelling of 505499293 in words is "five hundred five million, four hundred ninety-nine thousand, two hundred ninety-three".