481555161 has 6 divisors (see below), whose sum is σ = 695579690. Its totient is φ = 321036768.

The previous prime is 481555103. The next prime is 481555177. The reversal of 481555161 is 161555184.

481555161 is a `hidden beast` number, since 48 + 1 + 5 + 551 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 475022025 + 6533136 = 21795^2 + 2556^2 .

It is not a de Polignac number, because 481555161 - 2⁶ = 481555097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (481555181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26753056 + ... + 26753073.

Almost surely, 2^481555161 is an apocalyptic number.

It is an amenable number.

481555161 is a deficient number, since it is larger than the sum of its proper divisors (214024529).

481555161 is a wasteful number, since it uses less digits than its factorization.

481555161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53506135 (or 53506132 counting only the distinct ones).

The product of its digits is 24000, while the sum is 36.

The square root of 481555161 is about 21944.3651309397. The cubic root of 481555161 is about 783.8182068644.

The spelling of 481555161 in words is "four hundred eighty-one million, five hundred fifty-five thousand, one hundred sixty-one".