251111055233 has 2 divisors, whose sum is σ = 251111055234. Its totient is φ = 251111055232.

The previous prime is 251111055191. The next prime is 251111055257. The reversal of 251111055233 is 332550111152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143695581184 + 107415474049 = 379072^2 + 327743^2 .

It is a cyclic number.

It is not a de Polignac number, because 251111055233 - 2⁸ = 251111054977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 251111055196 and 251111055205.

It is not a weakly prime, because it can be changed into another prime (251111055263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125555527616 + 125555527617.

It is an arithmetic number, because the mean of its divisors is an integer number (125555527617).

Almost surely, 2^251111055233 is an apocalyptic number.

It is an amenable number.

251111055233 is a deficient number, since it is larger than the sum of its proper divisors (1).

251111055233 is an equidigital number, since it uses as much as digits as its factorization.

251111055233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 29.

Adding to 251111055233 its reverse (332550111152), we get a palindrome (583661166385).

The spelling of 251111055233 in words is "two hundred fifty-one billion, one hundred eleven million, fifty-five thousand, two hundred thirty-three".