1152861 has 4 divisors (see below), whose sum is σ = 1537152. Its totient is φ = 768572.

The previous prime is 1152857. The next prime is 1152881. The reversal of 1152861 is 1682511.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1682511 = 3 ⋅560837.

It is a cyclic number.

It is not a de Polignac number, because 1152861 - 2² = 1152857 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1152841) 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, 192141 + ... + 192146.

It is an arithmetic number, because the mean of its divisors is an integer number (384288).

2^1152861 is an apocalyptic number.

It is an amenable number.

1152861 is a deficient number, since it is larger than the sum of its proper divisors (384291).

1152861 is an equidigital number, since it uses as much as digits as its factorization.

1152861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384290.

The product of its digits is 480, while the sum is 24.

The square root of 1152861 is about 1073.7136489772. The cubic root of 1152861 is about 104.8557656806.

The spelling of 1152861 in words is "one million, one hundred fifty-two thousand, eight hundred sixty-one".