505545499 has 4 divisors (see below), whose sum is σ = 505698840. Its totient is φ = 505392160.

The previous prime is 505545493. The next prime is 505545511. The reversal of 505545499 is 994545505.

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

It is a cyclic number.

It is not a de Polignac number, because 505545499 - 2⁹ = 505544987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505545493) 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, 71614 + ... + 78355.

It is an arithmetic number, because the mean of its divisors is an integer number (126424710).

Almost surely, 2^505545499 is an apocalyptic number.

505545499 is a deficient number, since it is larger than the sum of its proper divisors (153341).

505545499 is a wasteful number, since it uses less digits than its factorization.

505545499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153340.

The product of its (nonzero) digits is 810000, while the sum is 46.

The square root of 505545499 is about 22484.3389718266. The cubic root of 505545499 is about 796.6240545086.

The spelling of 505545499 in words is "five hundred five million, five hundred forty-five thousand, four hundred ninety-nine".