481951566 has 64 divisors (see below), whose sum is σ = 1110542400. Its totient is φ = 154804608.

The previous prime is 481951553. The next prime is 481951577. The reversal of 481951566 is 665159184.

481951566 is a `hidden beast` number, since 4 + 81 + 9 + 5 + 1 + 566 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216676 + ... + 218888.

It is an arithmetic number, because the mean of its divisors is an integer number (17352225).

Almost surely, 2^481951566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 481951566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (555271200).

481951566 is an abundant number, since it is smaller than the sum of its proper divisors (628590834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

481951566 is a wasteful number, since it uses less digits than its factorization.

481951566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370 (or 2364 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 481951566 is about 21953.3953182646. The cubic root of 481951566 is about 784.0332215115.

The spelling of 481951566 in words is "four hundred eighty-one million, nine hundred fifty-one thousand, five hundred sixty-six".