486681521 has 8 divisors (see below), whose sum is σ = 500363304. Its totient is φ = 473086080.

The previous prime is 486681511. The next prime is 486681527. The reversal of 486681521 is 125186684.

It can be written as a sum of positive squares in 4 ways, for example, as 46730896 + 439950625 = 6836^2 + 20975^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 486681521 - 2¹⁸ = 486419377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (486681527) 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 in 7 ways as a sum of consecutive naturals, for example, 10070 + ... + 32783.

It is an arithmetic number, because the mean of its divisors is an integer number (62545413).

Almost surely, 2^486681521 is an apocalyptic number.

486681521 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

486681521 is a deficient number, since it is larger than the sum of its proper divisors (13681783).

486681521 is a wasteful number, since it uses less digits than its factorization.

486681521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43171.

The product of its digits is 92160, while the sum is 41.

The square root of 486681521 is about 22060.8594800837. The cubic root of 486681521 is about 786.5897549012.

It can be divided in two parts, 48668 and 1521, that multiplied together give a triangular number (74024028 = T₁₂₁₆₇).

The spelling of 486681521 in words is "four hundred eighty-six million, six hundred eighty-one thousand, five hundred twenty-one".