24553455221 has 2 divisors, whose sum is σ = 24553455222. Its totient is φ = 24553455220.

The previous prime is 24553455187. The next prime is 24553455271. The reversal of 24553455221 is 12255435542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24144808996 + 408646225 = 155386^2 + 20215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24553455221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24553455271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12276727610 + 12276727611.

It is an arithmetic number, because the mean of its divisors is an integer number (12276727611).

Almost surely, 2^24553455221 is an apocalyptic number.

It is an amenable number.

24553455221 is a deficient number, since it is larger than the sum of its proper divisors (1).

24553455221 is an equidigital number, since it uses as much as digits as its factorization.

24553455221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240000, while the sum is 38.

The spelling of 24553455221 in words is "twenty-four billion, five hundred fifty-three million, four hundred fifty-five thousand, two hundred twenty-one".