1154091 has 4 divisors (see below), whose sum is σ = 1538792. Its totient is φ = 769392.

The previous prime is 1154051. The next prime is 1154119. The reversal of 1154091 is 1904511.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1154091 - 2¹³ = 1145899 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1154051) 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, 192346 + ... + 192351.

It is an arithmetic number, because the mean of its divisors is an integer number (384698).

2^1154091 is an apocalyptic number.

1154091 is a deficient number, since it is larger than the sum of its proper divisors (384701).

1154091 is an equidigital number, since it uses as much as digits as its factorization.

1154091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384700.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 1154091 is about 1074.2862746959. The cubic root of 1154091 is about 104.8930430140.

The spelling of 1154091 in words is "one million, one hundred fifty-four thousand, ninety-one".