24564139 has 2 divisors, whose sum is σ = 24564140. Its totient is φ = 24564138.

The previous prime is 24564107. The next prime is 24564149. The reversal of 24564139 is 93146542.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 24564139 - 2⁵ = 24564107 is a prime.

It is a super-2 number, since 2×24564139² = 1206793849622642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (24564149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12282069 + 12282070.

It is an arithmetic number, because the mean of its divisors is an integer number (12282070).

Almost surely, 2^24564139 is an apocalyptic number.

24564139 is a deficient number, since it is larger than the sum of its proper divisors (1).

24564139 is an equidigital number, since it uses as much as digits as its factorization.

24564139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The square root of 24564139 is about 4956.2222508681. Note that the first 4 decimals coincide. The cubic root of 24564139 is about 290.6925146110.

The spelling of 24564139 in words is "twenty-four million, five hundred sixty-four thousand, one hundred thirty-nine".