24803981 has 2 divisors, whose sum is σ = 24803982. Its totient is φ = 24803980.

The previous prime is 24803971. The next prime is 24804001. The reversal of 24803981 is 18930842.

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., 19669225 + 5134756 = 4435^2 + 2266^2 .

It is a cyclic number.

It is not a de Polignac number, because 24803981 - 2⁶ = 24803917 is a prime.

It is a super-2 number, since 2×24803981² = 1230474946896722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24803941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12401990 + 12401991.

It is an arithmetic number, because the mean of its divisors is an integer number (12401991).

Almost surely, 2^24803981 is an apocalyptic number.

It is an amenable number.

24803981 is a deficient number, since it is larger than the sum of its proper divisors (1).

24803981 is an equidigital number, since it uses as much as digits as its factorization.

24803981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 24803981 is about 4980.3595251749. The cubic root of 24803981 is about 291.6355503494.

The spelling of 24803981 in words is "twenty-four million, eight hundred three thousand, nine hundred eighty-one".