481977217 has 8 divisors (see below), whose sum is σ = 510635016. Its totient is φ = 453353472.

The previous prime is 481977211. The next prime is 481977227. The reversal of 481977217 is 712779184.

It can be written as a sum of positive squares in 4 ways, for example, as 37442161 + 444535056 = 6119^2 + 21084^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-481977217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (481977211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24273 + ... + 39409.

It is an arithmetic number, because the mean of its divisors is an integer number (63829377).

Almost surely, 2^481977217 is an apocalyptic number.

It is an amenable number.

481977217 is a deficient number, since it is larger than the sum of its proper divisors (28657799).

481977217 is a wasteful number, since it uses less digits than its factorization.

481977217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17027.

The product of its digits is 197568, while the sum is 46.

The square root of 481977217 is about 21953.9795253617. The cubic root of 481977217 is about 784.0471308479.

The spelling of 481977217 in words is "four hundred eighty-one million, nine hundred seventy-seven thousand, two hundred seventeen".