92581 has 2 divisors, whose sum is σ = 92582. Its totient is φ = 92580.

The previous prime is 92569. The next prime is 92593. The reversal of 92581 is 18529.

92581 is nontrivially palindromic in base 4.

It is a balanced prime because it is at equal distance from previous prime (92569) and next prime (92593).

It can be written as a sum of positive squares in only one way, i.e., 65025 + 27556 = 255^2 + 166^2 .

It is a cyclic number.

It is not a de Polignac number, because 92581 - 2¹¹ = 90533 is a prime.

It is a super-2 number, since 2×92581² = 17142483122, which contains 22 as substring.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (92551) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46290 + 46291.

It is an arithmetic number, because the mean of its divisors is an integer number (46291).

2⁹²⁵⁸¹ is an apocalyptic number.

It is an amenable number.

92581 is a deficient number, since it is larger than the sum of its proper divisors (1).

92581 is an equidigital number, since it uses as much as digits as its factorization.

92581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 25.

The square root of 92581 is about 304.2712605554. The cubic root of 92581 is about 45.2384055029.

The spelling of 92581 in words is "ninety-two thousand, five hundred eighty-one".