505299881 has 8 divisors (see below), whose sum is σ = 510127200. Its totient is φ = 500487520.

The previous prime is 505299803. The next prime is 505299887. The reversal of 505299881 is 188992505.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505299881 is a prime.

It is a super-2 number, since 2×505299881² = 510655939477228322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505299887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71150 + ... + 77928.

It is an arithmetic number, because the mean of its divisors is an integer number (63765900).

Almost surely, 2^505299881 is an apocalyptic number.

It is an amenable number.

505299881 is a deficient number, since it is larger than the sum of its proper divisors (4827319).

505299881 is a wasteful number, since it uses less digits than its factorization.

505299881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7479.

The product of its (nonzero) digits is 259200, while the sum is 47.

The square root of 505299881 is about 22478.8763286780. The cubic root of 505299881 is about 796.4950210166.

The spelling of 505299881 in words is "five hundred five million, two hundred ninety-nine thousand, eight hundred eighty-one".