1155158 has 8 divisors (see below), whose sum is σ = 1746360. Its totient is φ = 573040.

The previous prime is 1155151. The next prime is 1155169. The reversal of 1155158 is 8515511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1943 + ... + 2466.

It is an arithmetic number, because the mean of its divisors is an integer number (218295).

2^1155158 is an apocalyptic number.

1155158 is a deficient number, since it is larger than the sum of its proper divisors (591202).

1155158 is a wasteful number, since it uses less digits than its factorization.

1155158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4542.

The product of its digits is 1000, while the sum is 26.

The square root of 1155158 is about 1074.7827687491. The cubic root of 1155158 is about 104.9253588952.

It can be divided in two parts, 115515 and 8, that multiplied together give a triangular number (924120 = T₁₃₅₉).

The spelling of 1155158 in words is "one million, one hundred fifty-five thousand, one hundred fifty-eight".