481224661 has 4 divisors (see below), whose sum is σ = 509532012. Its totient is φ = 452917312.

The previous prime is 481224659. The next prime is 481224671. The reversal of 481224661 is 166422184.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 310112100 + 171112561 = 17610^2 + 13081^2 .

It is a cyclic number.

It is not a de Polignac number, because 481224661 - 2¹ = 481224659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481224631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14153650 + ... + 14153683.

It is an arithmetic number, because the mean of its divisors is an integer number (127383003).

Almost surely, 2^481224661 is an apocalyptic number.

It is an amenable number.

481224661 is a deficient number, since it is larger than the sum of its proper divisors (28307351).

481224661 is a wasteful number, since it uses less digits than its factorization.

481224661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28307350.

The product of its digits is 18432, while the sum is 34.

The square root of 481224661 is about 21936.8334314686. The cubic root of 481224661 is about 783.6388496312.

The spelling of 481224661 in words is "four hundred eighty-one million, two hundred twenty-four thousand, six hundred sixty-one".