504121161 has 8 divisors (see below), whose sum is σ = 673184160. Its totient is φ = 335569472.

The previous prime is 504121157. The next prime is 504121183. The reversal of 504121161 is 161121405.

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 504121161 - 2² = 504121157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (504121151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125520 + ... + 129473.

It is an arithmetic number, because the mean of its divisors is an integer number (84148020).

Almost surely, 2^504121161 is an apocalyptic number.

It is an amenable number.

504121161 is a deficient number, since it is larger than the sum of its proper divisors (169062999).

504121161 is a wasteful number, since it uses less digits than its factorization.

504121161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255655.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 504121161 is about 22452.6426284302. The cubic root of 504121161 is about 795.8752071775.

Adding to 504121161 its reverse (161121405), we get a palindrome (665242566).

The spelling of 504121161 in words is "five hundred four million, one hundred twenty-one thousand, one hundred sixty-one".