1156115 has 4 divisors (see below), whose sum is σ = 1387344. Its totient is φ = 924888.

The previous prime is 1156109. The next prime is 1156121. The reversal of 1156115 is 5116511.

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

It is an interprime number because it is at equal distance from previous prime (1156109) and next prime (1156121).

It is a cyclic number.

It is not a de Polignac number, because 1156115 - 2⁸ = 1155859 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115607 + ... + 115616.

It is an arithmetic number, because the mean of its divisors is an integer number (346836).

2^1156115 is an apocalyptic number.

1156115 is a deficient number, since it is larger than the sum of its proper divisors (231229).

1156115 is an equidigital number, since it uses as much as digits as its factorization.

1156115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231228.

The product of its digits is 150, while the sum is 20.

The square root of 1156115 is about 1075.2278828230. The cubic root of 1156115 is about 104.9543263183.

The spelling of 1156115 in words is "one million, one hundred fifty-six thousand, one hundred fifteen".