1158005 has 12 divisors (see below), whose sum is σ = 1441836. Its totient is φ = 892800.

The previous prime is 1157987. The next prime is 1158007. The reversal of 1158005 is 5008511.

It can be written as a sum of positive squares in 2 ways, for example, as 649636 + 508369 = 806^2 + 713^2 .

It is not a de Polignac number, because 1158005 - 2⁸ = 1157749 is a prime.

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4685 + ... + 4925.

It is an arithmetic number, because the mean of its divisors is an integer number (120153).

2^1158005 is an apocalyptic number.

It is an amenable number.

1158005 is a deficient number, since it is larger than the sum of its proper divisors (283831).

1158005 is an equidigital number, since it uses as much as digits as its factorization.

1158005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1158005 is about 1076.1064073780. The cubic root of 1158005 is about 105.0114877832.

The spelling of 1158005 in words is "one million, one hundred fifty-eight thousand, five".