2423581 has 2 divisors, whose sum is σ = 2423582. Its totient is φ = 2423580.

The previous prime is 2423569. The next prime is 2423593. The reversal of 2423581 is 1853242.

It is a balanced prime because it is at equal distance from previous prime (2423569) and next prime (2423593).

It can be written as a sum of positive squares in only one way, i.e., 1666681 + 756900 = 1291^2 + 870^2 .

It is a cyclic number.

It is not a de Polignac number, because 2423581 - 2⁷ = 2423453 is a prime.

It is a super-2 number, since 2×2423581² = 11747489727122, which contains 22 as substring.

It is equal to p₁₇₇₉₀₁ and since 2423581 and 177901 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2423521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1211790 + 1211791.

It is an arithmetic number, because the mean of its divisors is an integer number (1211791).

2^2423581 is an apocalyptic number.

It is an amenable number.

2423581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2423581 is an equidigital number, since it uses as much as digits as its factorization.

2423581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 25.

The square root of 2423581 is about 1556.7854701275. The cubic root of 2423581 is about 134.3236588432.

The spelling of 2423581 in words is "two million, four hundred twenty-three thousand, five hundred eighty-one".