382551561 has 48 divisors (see below), whose sum is σ = 670909824. Its totient is φ = 205051392.

The previous prime is 382551553. The next prime is 382551583. The reversal of 382551561 is 165155283.

It is a happy number.

382551561 is a `hidden beast` number, since 3 + 82 + 5 + 515 + 61 = 666.

It is not a de Polignac number, because 382551561 - 2³ = 382551553 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (382551511) 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 47 ways as a sum of consecutive naturals, for example, 585511 + ... + 586163.

It is an arithmetic number, because the mean of its divisors is an integer number (13977288).

Almost surely, 2^382551561 is an apocalyptic number.

It is an amenable number.

382551561 is a deficient number, since it is larger than the sum of its proper divisors (288358263).

382551561 is a wasteful number, since it uses less digits than its factorization.

382551561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230 (or 1227 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 382551561 is about 19558.9253539145. The cubic root of 382551561 is about 725.9332008298.

The spelling of 382551561 in words is "three hundred eighty-two million, five hundred fifty-one thousand, five hundred sixty-one".