505308841 has 4 divisors (see below), whose sum is σ = 512850832. Its totient is φ = 497766852.

The previous prime is 505308829. The next prime is 505308851. The reversal of 505308841 is 148803505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 505308841 - 2⁹ = 505308329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505308797 and 505308806.

It is not an unprimeable number, because it can be changed into a prime (505308851) 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, 3770895 + ... + 3771028.

It is an arithmetic number, because the mean of its divisors is an integer number (128212708).

Almost surely, 2^505308841 is an apocalyptic number.

It is an amenable number.

505308841 is a deficient number, since it is larger than the sum of its proper divisors (7541991).

505308841 is an equidigital number, since it uses as much as digits as its factorization.

505308841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7541990.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 505308841 is about 22479.0756260127. The cubic root of 505308841 is about 796.4997288171.

The spelling of 505308841 in words is "five hundred five million, three hundred eight thousand, eight hundred forty-one".