1158887 has 2 divisors, whose sum is σ = 1158888. Its totient is φ = 1158886.

The previous prime is 1158881. The next prime is 1158923. The reversal of 1158887 is 7888511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1158887 - 2⁶ = 1158823 is a prime.

It is a Chen prime.

It is equal to p₈₉₉₅₇ and since 1158887 and 89957 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 1158887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1158881) 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, 579443 + 579444.

It is an arithmetic number, because the mean of its divisors is an integer number (579444).

2^1158887 is an apocalyptic number.

1158887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158887 is an equidigital number, since it uses as much as digits as its factorization.

1158887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17920, while the sum is 38.

The square root of 1158887 is about 1076.5161401484. The cubic root of 1158887 is about 105.0381418498.

The spelling of 1158887 in words is "one million, one hundred fifty-eight thousand, eight hundred eighty-seven".