1155867 has 4 divisors (see below), whose sum is σ = 1541160. Its totient is φ = 770576.

The previous prime is 1155863. The next prime is 1155899. The reversal of 1155867 is 7685511.

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

It is a cyclic number.

It is not a de Polignac number, because 1155867 - 2² = 1155863 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1155863) 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, 192642 + ... + 192647.

It is an arithmetic number, because the mean of its divisors is an integer number (385290).

2^1155867 is an apocalyptic number.

1155867 is a deficient number, since it is larger than the sum of its proper divisors (385293).

1155867 is an equidigital number, since it uses as much as digits as its factorization.

1155867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385292.

The product of its digits is 8400, while the sum is 33.

The square root of 1155867 is about 1075.1125522474. The cubic root of 1155867 is about 104.9468211439.

The spelling of 1155867 in words is "one million, one hundred fifty-five thousand, eight hundred sixty-seven".