481571977 has 4 divisors (see below), whose sum is σ = 481615876. Its totient is φ = 481528080.

The previous prime is 481571963. The next prime is 481572017. The reversal of 481571977 is 779175184.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 230159241 + 251412736 = 15171^2 + 15856^2 .

It is a cyclic number.

It is not a de Polignac number, because 481571977 - 2¹⁵ = 481539209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 481571977.

It is not an unprimeable number, because it can be changed into a prime (481571957) 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 3 ways as a sum of consecutive naturals, for example, 10327 + ... + 32707.

It is an arithmetic number, because the mean of its divisors is an integer number (120403969).

Almost surely, 2^481571977 is an apocalyptic number.

It is an amenable number.

481571977 is a deficient number, since it is larger than the sum of its proper divisors (43899).

481571977 is a wasteful number, since it uses less digits than its factorization.

481571977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43898.

The product of its digits is 493920, while the sum is 49.

The square root of 481571977 is about 21944.7482783467. The cubic root of 481571977 is about 783.8273304530.

The spelling of 481571977 in words is "four hundred eighty-one million, five hundred seventy-one thousand, nine hundred seventy-seven".