24981001 has 2 divisors, whose sum is σ = 24981002. Its totient is φ = 24981000.

The previous prime is 24980999. The next prime is 24981043. The reversal of 24981001 is 10018942.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24950025 + 30976 = 4995^2 + 176^2 .

It is a cyclic number.

It is not a de Polignac number, because 24981001 - 2¹ = 24980999 is a prime.

Together with 24980999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (24988001) 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, 12490500 + 12490501.

It is an arithmetic number, because the mean of its divisors is an integer number (12490501).

Almost surely, 2^24981001 is an apocalyptic number.

It is an amenable number.

24981001 is a deficient number, since it is larger than the sum of its proper divisors (1).

24981001 is an equidigital number, since it uses as much as digits as its factorization.

24981001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 24981001 is about 4998.0997389008. The cubic root of 24981001 is about 292.3276838323.

Adding to 24981001 its reverse (10018942), we get a palindrome (34999943).

The spelling of 24981001 in words is "twenty-four million, nine hundred eighty-one thousand, one".