505416881 has 8 divisors (see below), whose sum is σ = 540255744. Its totient is φ = 471650080.

The previous prime is 505416869. The next prime is 505416893. The reversal of 505416881 is 188614505.

It is an interprime number because it is at equal distance from previous prime (505416869) and next prime (505416893).

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-505416881 is a prime.

It is a super-2 number, since 2×505416881² = 510892447199536322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505416811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267041 + ... + 268926.

It is an arithmetic number, because the mean of its divisors is an integer number (67531968).

Almost surely, 2^505416881 is an apocalyptic number.

It is an amenable number.

505416881 is a deficient number, since it is larger than the sum of its proper divisors (34838863).

505416881 is a wasteful number, since it uses less digits than its factorization.

505416881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536031.

The product of its (nonzero) digits is 38400, while the sum is 38.

The square root of 505416881 is about 22481.4786213007. The cubic root of 505416881 is about 796.5564912638.

The spelling of 505416881 in words is "five hundred five million, four hundred sixteen thousand, eight hundred eighty-one".