2417581 has 2 divisors, whose sum is σ = 2417582. Its totient is φ = 2417580.

The previous prime is 2417557. The next prime is 2417593. The reversal of 2417581 is 1857142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1974025 + 443556 = 1405^2 + 666^2 .

It is a cyclic number.

It is not a de Polignac number, because 2417581 - 2¹¹ = 2415533 is a prime.

It is a super-2 number, since 2×2417581² = 11689395783122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2417501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1208790 + 1208791.

It is an arithmetic number, because the mean of its divisors is an integer number (1208791).

2^2417581 is an apocalyptic number.

It is an amenable number.

2417581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2417581 is an equidigital number, since it uses as much as digits as its factorization.

2417581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 28.

The square root of 2417581 is about 1554.8572281724. The cubic root of 2417581 is about 134.2127199814.

The spelling of 2417581 in words is "two million, four hundred seventeen thousand, five hundred eighty-one".