250553400091 has 2 divisors, whose sum is σ = 250553400092. Its totient is φ = 250553400090.

The previous prime is 250553400089. The next prime is 250553400103. The reversal of 250553400091 is 190004355052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 250553400091 - 2¹ = 250553400089 is a prime.

Together with 250553400089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (250553400011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125276700045 + 125276700046.

It is an arithmetic number, because the mean of its divisors is an integer number (125276700046).

Almost surely, 2^250553400091 is an apocalyptic number.

250553400091 is a deficient number, since it is larger than the sum of its proper divisors (1).

250553400091 is an equidigital number, since it uses as much as digits as its factorization.

250553400091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 250553400091 in words is "two hundred fifty billion, five hundred fifty-three million, four hundred thousand, ninety-one".