504166121 has 4 divisors (see below), whose sum is σ = 530701200. Its totient is φ = 477631044.

The previous prime is 504166109. The next prime is 504166123. The reversal of 504166121 is 121661405.

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 a de Polignac number, because none of the positive numbers 2^k-504166121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (504166123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13267511 + ... + 13267548.

It is an arithmetic number, because the mean of its divisors is an integer number (132675300).

Almost surely, 2^504166121 is an apocalyptic number.

It is an amenable number.

504166121 is a deficient number, since it is larger than the sum of its proper divisors (26535079).

504166121 is a wasteful number, since it uses less digits than its factorization.

504166121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26535078.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 504166121 is about 22453.6438245555. The cubic root of 504166121 is about 795.8988664936.

The spelling of 504166121 in words is "five hundred four million, one hundred sixty-six thousand, one hundred twenty-one".