505651503 has 16 divisors (see below), whose sum is σ = 811070720. Its totient is φ = 273735936.

The previous prime is 505651501. The next prime is 505651507. The reversal of 505651503 is 305156505.

It is not a de Polignac number, because 505651503 - 2¹ = 505651501 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 (505651501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 633250 + ... + 634047.

It is an arithmetic number, because the mean of its divisors is an integer number (50691920).

Almost surely, 2^505651503 is an apocalyptic number.

505651503 is a deficient number, since it is larger than the sum of its proper divisors (305419217).

505651503 is a wasteful number, since it uses less digits than its factorization.

505651503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267326.

The product of its (nonzero) digits is 11250, while the sum is 30.

The square root of 505651503 is about 22486.6961334919. The cubic root of 505651503 is about 796.6797299687.

The spelling of 505651503 in words is "five hundred five million, six hundred fifty-one thousand, five hundred three".