487185121 has 2 divisors, whose sum is σ = 487185122. Its totient is φ = 487185120.

The previous prime is 487185113. The next prime is 487185143. The reversal of 487185121 is 121581784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 478034496 + 9150625 = 21864^2 + 3025^2 .

It is a cyclic number.

It is not a de Polignac number, because 487185121 - 2³ = 487185113 is a prime.

It is not a weakly prime, because it can be changed into another prime (487185191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243592560 + 243592561.

It is an arithmetic number, because the mean of its divisors is an integer number (243592561).

Almost surely, 2^487185121 is an apocalyptic number.

It is an amenable number.

487185121 is a deficient number, since it is larger than the sum of its proper divisors (1).

487185121 is an equidigital number, since it uses as much as digits as its factorization.

487185121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17920, while the sum is 37.

The square root of 487185121 is about 22072.2704088184. The cubic root of 487185121 is about 786.8609726823.

The spelling of 487185121 in words is "four hundred eighty-seven million, one hundred eighty-five thousand, one hundred twenty-one".