89381251 has 2 divisors, whose sum is σ = 89381252. Its totient is φ = 89381250.

The previous prime is 89381191. The next prime is 89381297. The reversal of 89381251 is 15218398.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89381251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89381251.

It is not a weakly prime, because it can be changed into another prime (89381051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44690625 + 44690626.

It is an arithmetic number, because the mean of its divisors is an integer number (44690626).

Almost surely, 2^89381251 is an apocalyptic number.

89381251 is a deficient number, since it is larger than the sum of its proper divisors (1).

89381251 is an equidigital number, since it uses as much as digits as its factorization.

89381251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 37.

The square root of 89381251 is about 9454.1658013809. The cubic root of 89381251 is about 447.1111251894. Note that the first 4 decimals are identical.

The spelling of 89381251 in words is "eighty-nine million, three hundred eighty-one thousand, two hundred fifty-one".