89111251 has 2 divisors, whose sum is σ = 89111252. Its totient is φ = 89111250.

The previous prime is 89111227. The next prime is 89111261. The reversal of 89111251 is 15211198.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89111251 - 2⁷ = 89111123 is a prime.

It is not a weakly prime, because it can be changed into another prime (89111221) 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, 44555625 + 44555626.

It is an arithmetic number, because the mean of its divisors is an integer number (44555626).

Almost surely, 2^89111251 is an apocalyptic number.

89111251 is a deficient number, since it is larger than the sum of its proper divisors (1).

89111251 is an equidigital number, since it uses as much as digits as its factorization.

89111251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 28.

The square root of 89111251 is about 9439.8755818072. The cubic root of 89111251 is about 446.6604648157.

The spelling of 89111251 in words is "eighty-nine million, one hundred eleven thousand, two hundred fifty-one".