24254221 has 2 divisors, whose sum is σ = 24254222. Its totient is φ = 24254220.

The previous prime is 24254173. The next prime is 24254233. The reversal of 24254221 is 12245242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21261321 + 2992900 = 4611^2 + 1730^2 .

It is a cyclic number.

It is not a de Polignac number, because 24254221 - 2⁷ = 24254093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 24254192 and 24254201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24254261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12127110 + 12127111.

It is an arithmetic number, because the mean of its divisors is an integer number (12127111).

Almost surely, 2^24254221 is an apocalyptic number.

It is an amenable number.

24254221 is a deficient number, since it is larger than the sum of its proper divisors (1).

24254221 is an equidigital number, since it uses as much as digits as its factorization.

24254221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1280, while the sum is 22.

The square root of 24254221 is about 4924.8574598662. The cubic root of 24254221 is about 289.4648115819.

Adding to 24254221 its reverse (12245242), we get a palindrome (36499463).

The spelling of 24254221 in words is "twenty-four million, two hundred fifty-four thousand, two hundred twenty-one".