481878561 has 16 divisors (see below), whose sum is σ = 647472960. Its totient is φ = 318776640.

The previous prime is 481878557. The next prime is 481878563. The reversal of 481878561 is 165878184.

It is a happy number.

It is not a de Polignac number, because 481878561 - 2² = 481878557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 481878561.

It is not an unprimeable number, because it can be changed into a prime (481878563) 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 15 ways as a sum of consecutive naturals, for example, 440331 + ... + 441423.

It is an arithmetic number, because the mean of its divisors is an integer number (40467060).

Almost surely, 2^481878561 is an apocalyptic number.

It is an amenable number.

481878561 is a deficient number, since it is larger than the sum of its proper divisors (165594399).

481878561 is a wasteful number, since it uses less digits than its factorization.

481878561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096.

The product of its digits is 430080, while the sum is 48.

The square root of 481878561 is about 21951.7325284361. The cubic root of 481878561 is about 783.9936316165.

The spelling of 481878561 in words is "four hundred eighty-one million, eight hundred seventy-eight thousand, five hundred sixty-one".