1158172 has 6 divisors (see below), whose sum is σ = 2026808. Its totient is φ = 579084.

The previous prime is 1158161. The next prime is 1158187. The reversal of 1158172 is 2718511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144768 + ... + 144775.

2^1158172 is an apocalyptic number.

It is an amenable number.

1158172 is a deficient number, since it is larger than the sum of its proper divisors (868636).

1158172 is a wasteful number, since it uses less digits than its factorization.

1158172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289547 (or 289545 counting only the distinct ones).

The product of its digits is 560, while the sum is 25.

The square root of 1158172 is about 1076.1839991377. The cubic root of 1158172 is about 105.0165355666.

The spelling of 1158172 in words is "one million, one hundred fifty-eight thousand, one hundred seventy-two".