24499961 has 2 divisors, whose sum is σ = 24499962. Its totient is φ = 24499960.

The previous prime is 24499933. The next prime is 24499963. The reversal of 24499961 is 16999442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19855936 + 4644025 = 4456^2 + 2155^2 .

It is a cyclic number.

It is not a de Polignac number, because 24499961 - 2¹⁰ = 24498937 is a prime.

Together with 24499963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (24499963) 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, 12249980 + 12249981.

It is an arithmetic number, because the mean of its divisors is an integer number (12249981).

Almost surely, 2^24499961 is an apocalyptic number.

It is an amenable number.

24499961 is a deficient number, since it is larger than the sum of its proper divisors (1).

24499961 is an equidigital number, since it uses as much as digits as its factorization.

24499961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 44.

The square root of 24499961 is about 4949.7435287093. The cubic root of 24499961 is about 290.4391325675.

The spelling of 24499961 in words is "twenty-four million, four hundred ninety-nine thousand, nine hundred sixty-one".