82581160 has 16 divisors (see below), whose sum is σ = 185807700. Its totient is φ = 33032448.

The previous prime is 82581157. The next prime is 82581167. The reversal of 82581160 is 6118528.

It can be written as a sum of positive squares in 2 ways, for example, as 79602084 + 2979076 = 8922^2 + 1726^2 .

It is not an unprimeable number, because it can be changed into a prime (82581167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1032225 + ... + 1032304.

Almost surely, 2^82581160 is an apocalyptic number.

It is an amenable number.

82581160 is an abundant number, since it is smaller than the sum of its proper divisors (103226540).

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

82581160 is a wasteful number, since it uses less digits than its factorization.

82581160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064540 (or 2064536 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 82581160 is about 9087.4176750054. The cubic root of 82581160 is about 435.4720906328.

Adding to 82581160 its reverse (6118528), we get a palindrome (88699688).

The spelling of 82581160 in words is "eighty-two million, five hundred eighty-one thousand, one hundred sixty".