1158081 has 8 divisors (see below), whose sum is σ = 1566144. Its totient is φ = 761040.

The previous prime is 1158077. The next prime is 1158089. The reversal of 1158081 is 1808511.

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

It is not a de Polignac number, because 1158081 - 2² = 1158077 is a prime.

It is a super-2 number, since 2×1158081² = 2682303205122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1158089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2506 + ... + 2931.

It is an arithmetic number, because the mean of its divisors is an integer number (195768).

2^1158081 is an apocalyptic number.

It is an amenable number.

1158081 is a deficient number, since it is larger than the sum of its proper divisors (408063).

1158081 is an equidigital number, since it uses as much as digits as its factorization.

1158081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5511.

The product of its (nonzero) digits is 320, while the sum is 24.

The square root of 1158081 is about 1076.1417192917. The cubic root of 1158081 is about 105.0137850382.

The spelling of 1158081 in words is "one million, one hundred fifty-eight thousand, eighty-one".