1082581 has 2 divisors, whose sum is σ = 1082582. Its totient is φ = 1082580.

The previous prime is 1082579. The next prime is 1082593. The reversal of 1082581 is 1852801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 680625 + 401956 = 825^2 + 634^2 .

It is a cyclic number.

It is not a de Polignac number, because 1082581 - 2¹ = 1082579 is a prime.

It is a super-2 number, since 2×1082581² = 2343963243122, which contains 22 as substring.

Together with 1082579, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1082531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541290 + 541291.

It is an arithmetic number, because the mean of its divisors is an integer number (541291).

2^1082581 is an apocalyptic number.

It is an amenable number.

1082581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1082581 is an equidigital number, since it uses as much as digits as its factorization.

1082581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 1082581 is about 1040.4715277219. The cubic root of 1082581 is about 102.6802222970.

The spelling of 1082581 in words is "one million, eighty-two thousand, five hundred eighty-one".