505775503 has 4 divisors (see below), whose sum is σ = 517537768. Its totient is φ = 494013240.

The previous prime is 505775443. The next prime is 505775513. The reversal of 505775503 is 305577505.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-505775503 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 (505775513) 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, 5881068 + ... + 5881153.

It is an arithmetic number, because the mean of its divisors is an integer number (129384442).

Almost surely, 2^505775503 is an apocalyptic number.

505775503 is a deficient number, since it is larger than the sum of its proper divisors (11762265).

505775503 is a wasteful number, since it uses less digits than its factorization.

505775503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11762264.

The product of its (nonzero) digits is 91875, while the sum is 37.

The square root of 505775503 is about 22489.4531503103. The cubic root of 505775503 is about 796.7448474207.

The spelling of 505775503 in words is "five hundred five million, seven hundred seventy-five thousand, five hundred three".