249355111 has 2 divisors, whose sum is σ = 249355112. Its totient is φ = 249355110.

The previous prime is 249355109. The next prime is 249355147. The reversal of 249355111 is 111553942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 249355111 - 2¹ = 249355109 is a prime.

Together with 249355109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249350111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124677555 + 124677556.

It is an arithmetic number, because the mean of its divisors is an integer number (124677556).

Almost surely, 2^249355111 is an apocalyptic number.

249355111 is a deficient number, since it is larger than the sum of its proper divisors (1).

249355111 is an equidigital number, since it uses as much as digits as its factorization.

249355111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 31.

The square root of 249355111 is about 15790.9819517344. The cubic root of 249355111 is about 629.4183857031.

The spelling of 249355111 in words is "two hundred forty-nine million, three hundred fifty-five thousand, one hundred eleven".