24996421 has 2 divisors, whose sum is σ = 24996422. Its totient is φ = 24996420.

The previous prime is 24996403. The next prime is 24996431. The reversal of 24996421 is 12469942.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15760900 + 9235521 = 3970^2 + 3039^2 .

It is a cyclic number.

It is not a de Polignac number, because 24996421 - 2¹⁷ = 24865349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24996431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12498210 + 12498211.

It is an arithmetic number, because the mean of its divisors is an integer number (12498211).

Almost surely, 2^24996421 is an apocalyptic number.

It is an amenable number.

24996421 is a deficient number, since it is larger than the sum of its proper divisors (1).

24996421 is an equidigital number, since it uses as much as digits as its factorization.

24996421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 24996421 is about 4999.6420871898. The cubic root of 24996421 is about 292.3878197427.

The spelling of 24996421 in words is "twenty-four million, nine hundred ninety-six thousand, four hundred twenty-one".