254213191 has 2 divisors, whose sum is σ = 254213192. Its totient is φ = 254213190.

The previous prime is 254213137. The next prime is 254213203. The reversal of 254213191 is 191312452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254213191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254217191) 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, 127106595 + 127106596.

It is an arithmetic number, because the mean of its divisors is an integer number (127106596).

Almost surely, 2^254213191 is an apocalyptic number.

254213191 is a deficient number, since it is larger than the sum of its proper divisors (1).

254213191 is an equidigital number, since it uses as much as digits as its factorization.

254213191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 28.

The square root of 254213191 is about 15944.0644441748. The cubic root of 254213191 is about 633.4796878451.

The spelling of 254213191 in words is "two hundred fifty-four million, two hundred thirteen thousand, one hundred ninety-one".