82187361 has 6 divisors (see below), whose sum is σ = 118715090. Its totient is φ = 54791568.

The previous prime is 82187353. The next prime is 82187377. The reversal of 82187361 is 16378128.

It can be written as a sum of positive squares in only one way, i.e., 42497361 + 39690000 = 6519^2 + 6300^2 .

It is not a de Polignac number, because 82187361 - 2³ = 82187353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82187311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4565956 + ... + 4565973.

Almost surely, 2^82187361 is an apocalyptic number.

It is an amenable number.

82187361 is a deficient number, since it is larger than the sum of its proper divisors (36527729).

82187361 is a wasteful number, since it uses less digits than its factorization.

82187361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9131935 (or 9131932 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 82187361 is about 9065.7245159998. The cubic root of 82187361 is about 434.7787856602.

The spelling of 82187361 in words is "eighty-two million, one hundred eighty-seven thousand, three hundred sixty-one".