500505551 has 24 divisors (see below), whose sum is σ = 663904080. Its totient is φ = 372701952.

The previous prime is 500505539. The next prime is 500505559. The reversal of 500505551 is 155505005.

It is not a de Polignac number, because 500505551 - 2¹⁴ = 500489167 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 500505551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500505559) 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 23 ways as a sum of consecutive naturals, for example, 12281 + ... + 33938.

It is an arithmetic number, because the mean of its divisors is an integer number (27662670).

Almost surely, 2^500505551 is an apocalyptic number.

500505551 is a deficient number, since it is larger than the sum of its proper divisors (163398529).

500505551 is a wasteful number, since it uses less digits than its factorization.

500505551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46263 (or 46256 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 26.

The square root of 500505551 is about 22371.9813829710. The cubic root of 500505551 is about 793.9679399398.

The spelling of 500505551 in words is "five hundred million, five hundred five thousand, five hundred fifty-one".