505557505 has 8 divisors (see below), whose sum is σ = 607407552. Its totient is φ = 403953648.

The previous prime is 505557487. The next prime is 505557527. The reversal of 505557505 is 505755505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505557505 - 2⁵ = 505557473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56997 + ... + 65266.

It is an arithmetic number, because the mean of its divisors is an integer number (75925944).

Almost surely, 2^505557505 is an apocalyptic number.

It is an amenable number.

505557505 is a deficient number, since it is larger than the sum of its proper divisors (101850047).

505557505 is a wasteful number, since it uses less digits than its factorization.

505557505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123095.

The product of its (nonzero) digits is 109375, while the sum is 37.

The square root of 505557505 is about 22484.6059560758. The cubic root of 505557505 is about 796.6303606952.

It can be divided in two parts, 50 and 5557505, that added together give a palindrome (5557555).

The spelling of 505557505 in words is "five hundred five million, five hundred fifty-seven thousand, five hundred five".