83162581 has 4 divisors (see below), whose sum is σ = 84525964. Its totient is φ = 81799200.

The previous prime is 83162561. The next prime is 83162587. The reversal of 83162581 is 18526138.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 970225 + 82192356 = 985^2 + 9066^2 .

It is a cyclic number.

It is not a de Polignac number, because 83162581 - 2¹¹ = 83160533 is a prime.

It is a super-2 number, since 2×83162581² = 13832029757163122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83162587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681600 + ... + 681721.

It is an arithmetic number, because the mean of its divisors is an integer number (21131491).

Almost surely, 2^83162581 is an apocalyptic number.

It is an amenable number.

83162581 is a deficient number, since it is larger than the sum of its proper divisors (1363383).

83162581 is a wasteful number, since it uses less digits than its factorization.

83162581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363382.

The product of its digits is 11520, while the sum is 34.

The square root of 83162581 is about 9119.3520054881. The cubic root of 83162581 is about 436.4916965671.

The spelling of 83162581 in words is "eighty-three million, one hundred sixty-two thousand, five hundred eighty-one".