505305134 has 4 divisors (see below), whose sum is σ = 757957704. Its totient is φ = 252652566.

The previous prime is 505305091. The next prime is 505305139. The reversal of 505305134 is 431503505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 431503505 = 5 ⋅86300701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505305139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126326282 + ... + 126326285.

It is an arithmetic number, because the mean of its divisors is an integer number (189489426).

Almost surely, 2^505305134 is an apocalyptic number.

505305134 is a deficient number, since it is larger than the sum of its proper divisors (252652570).

505305134 is a wasteful number, since it uses less digits than its factorization.

505305134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252652569.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 505305134 is about 22478.9931714034. The cubic root of 505305134 is about 796.4977810765.

Adding to 505305134 its reverse (431503505), we get a palindrome (936808639).

The spelling of 505305134 in words is "five hundred five million, three hundred five thousand, one hundred thirty-four".