2486581 has 2 divisors, whose sum is σ = 2486582. Its totient is φ = 2486580.

The previous prime is 2486579. The next prime is 2486591. The reversal of 2486581 is 1856842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2452356 + 34225 = 1566^2 + 185^2 .

It is a cyclic number.

It is not a de Polignac number, because 2486581 - 2¹ = 2486579 is a prime.

It is a super-2 number, since 2×2486581² = 12366170139122, which contains 22 as substring.

Together with 2486579, 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 (2486501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1243290 + 1243291.

It is an arithmetic number, because the mean of its divisors is an integer number (1243291).

2^2486581 is an apocalyptic number.

It is an amenable number.

2486581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2486581 is an equidigital number, since it uses as much as digits as its factorization.

2486581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15360, while the sum is 34.

The square root of 2486581 is about 1576.8896600587. The cubic root of 2486581 is about 135.4776132549.

The spelling of 2486581 in words is "two million, four hundred eighty-six thousand, five hundred eighty-one".