1152291 has 16 divisors (see below), whose sum is σ = 1804544. Its totient is φ = 640224.

The previous prime is 1152287. The next prime is 1152313. The reversal of 1152291 is 1922511.

It is not a de Polignac number, because 1152291 - 2² = 1152287 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1152091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36 + ... + 1518.

It is an arithmetic number, because the mean of its divisors is an integer number (112784).

2^1152291 is an apocalyptic number.

1152291 is a deficient number, since it is larger than the sum of its proper divisors (652253).

1152291 is a wasteful number, since it uses less digits than its factorization.

1152291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530.

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

The square root of 1152291 is about 1073.4481822613. The cubic root of 1152291 is about 104.8384818278.

The spelling of 1152291 in words is "one million, one hundred fifty-two thousand, two hundred ninety-one".