504722921 has 2 divisors, whose sum is σ = 504722922. Its totient is φ = 504722920.

The previous prime is 504722903. The next prime is 504722941. The reversal of 504722921 is 129227405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 431808400 + 72914521 = 20780^2 + 8539^2 .

It is a cyclic number.

It is not a de Polignac number, because 504722921 - 2¹⁰ = 504721897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (504722941) 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 as a sum of consecutive naturals, namely, 252361460 + 252361461.

It is an arithmetic number, because the mean of its divisors is an integer number (252361461).

Almost surely, 2^504722921 is an apocalyptic number.

It is an amenable number.

504722921 is a deficient number, since it is larger than the sum of its proper divisors (1).

504722921 is an equidigital number, since it uses as much as digits as its factorization.

504722921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 504722921 is about 22466.0392815467. The cubic root of 504722921 is about 796.1917550410.

The spelling of 504722921 in words is "five hundred four million, seven hundred twenty-two thousand, nine hundred twenty-one".