1152561 has 4 divisors (see below), whose sum is σ = 1536752. Its totient is φ = 768372.

The previous prime is 1152527. The next prime is 1152589. The reversal of 1152561 is 1652511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1152561 - 2¹⁰ = 1151537 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 (1152161) 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, 192091 + ... + 192096.

It is an arithmetic number, because the mean of its divisors is an integer number (384188).

2^1152561 is an apocalyptic number.

It is an amenable number.

1152561 is a deficient number, since it is larger than the sum of its proper divisors (384191).

1152561 is an equidigital number, since it uses as much as digits as its factorization.

1152561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384190.

The product of its digits is 300, while the sum is 21.

The square root of 1152561 is about 1073.5739378357. The cubic root of 1152561 is about 104.8466696263.

The spelling of 1152561 in words is "one million, one hundred fifty-two thousand, five hundred sixty-one".