487320121 has 2 divisors, whose sum is σ = 487320122. Its totient is φ = 487320120.

The previous prime is 487320109. The next prime is 487320173. The reversal of 487320121 is 121023784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 291180096 + 196140025 = 17064^2 + 14005^2 .

It is a cyclic number.

It is not a de Polignac number, because 487320121 - 2¹⁷ = 487189049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 487320121.

It is not a weakly prime, because it can be changed into another prime (487320101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243660060 + 243660061.

It is an arithmetic number, because the mean of its divisors is an integer number (243660061).

Almost surely, 2^487320121 is an apocalyptic number.

It is an amenable number.

487320121 is a deficient number, since it is larger than the sum of its proper divisors (1).

487320121 is an equidigital number, since it uses as much as digits as its factorization.

487320121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 487320121 is about 22075.3283327791. The cubic root of 487320121 is about 786.9336462352.

The spelling of 487320121 in words is "four hundred eighty-seven million, three hundred twenty thousand, one hundred twenty-one".