481511521 has 2 divisors, whose sum is σ = 481511522. Its totient is φ = 481511520.

The previous prime is 481511501. The next prime is 481511579. The reversal of 481511521 is 125115184.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 477859600 + 3651921 = 21860^2 + 1911^2 .

It is a cyclic number.

It is not a de Polignac number, because 481511521 - 2⁵ = 481511489 is a prime.

It is a Chen prime.

It is equal to p_25432048 and since 481511521 and 25432048 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 481511521.

It is not a weakly prime, because it can be changed into another prime (481511501) 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 as a sum of consecutive naturals, namely, 240755760 + 240755761.

It is an arithmetic number, because the mean of its divisors is an integer number (240755761).

Almost surely, 2^481511521 is an apocalyptic number.

It is an amenable number.

481511521 is a deficient number, since it is larger than the sum of its proper divisors (1).

481511521 is an equidigital number, since it uses as much as digits as its factorization.

481511521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1600, while the sum is 28.

The square root of 481511521 is about 21943.3707757035. The cubic root of 481511521 is about 783.7945288156.

The spelling of 481511521 in words is "four hundred eighty-one million, five hundred eleven thousand, five hundred twenty-one".