115211251 has 2 divisors, whose sum is σ = 115211252. Its totient is φ = 115211250.

The previous prime is 115211179. The next prime is 115211279. The reversal of 115211251 is 152112511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115211251 - 2¹⁷ = 115080179 is a prime.

It is not a weakly prime, because it can be changed into another prime (115211351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57605625 + 57605626.

It is an arithmetic number, because the mean of its divisors is an integer number (57605626).

Almost surely, 2^115211251 is an apocalyptic number.

115211251 is a deficient number, since it is larger than the sum of its proper divisors (1).

115211251 is an equidigital number, since it uses as much as digits as its factorization.

115211251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100, while the sum is 19.

The square root of 115211251 is about 10733.6504042194. The cubic root of 115211251 is about 486.5919996058.

Adding to 115211251 its reverse (152112511), we get a palindrome (267323762).

It can be divided in two parts, 1152 and 11251, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 115211251 in words is "one hundred fifteen million, two hundred eleven thousand, two hundred fifty-one".