251232263 has 2 divisors, whose sum is σ = 251232264. Its totient is φ = 251232262.

The previous prime is 251232253. The next prime is 251232271. The reversal of 251232263 is 362232152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 251232263 - 2¹² = 251228167 is a prime.

It is equal to p_13743071 and since 251232263 and 13743071 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251232253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125616131 + 125616132.

It is an arithmetic number, because the mean of its divisors is an integer number (125616132).

Almost surely, 2^251232263 is an apocalyptic number.

251232263 is a deficient number, since it is larger than the sum of its proper divisors (1).

251232263 is an equidigital number, since it uses as much as digits as its factorization.

251232263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 26.

The square root of 251232263 is about 15850.3079780804. The cubic root of 251232263 is about 630.9938650686.

The spelling of 251232263 in words is "two hundred fifty-one million, two hundred thirty-two thousand, two hundred sixty-three".