24990971 has 2 divisors, whose sum is σ = 24990972. Its totient is φ = 24990970.

The previous prime is 24990943. The next prime is 24990989. The reversal of 24990971 is 17909942.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24990971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (24990071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12495485 + 12495486.

It is an arithmetic number, because the mean of its divisors is an integer number (12495486).

Almost surely, 2^24990971 is an apocalyptic number.

24990971 is a deficient number, since it is larger than the sum of its proper divisors (1).

24990971 is an equidigital number, since it uses as much as digits as its factorization.

24990971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 24990971 is about 4999.0970184624. The cubic root of 24990971 is about 292.3665683078.

The spelling of 24990971 in words is "twenty-four million, nine hundred ninety thousand, nine hundred seventy-one".