1156387 has 2 divisors, whose sum is σ = 1156388. Its totient is φ = 1156386.

The previous prime is 1156369. The next prime is 1156403. The reversal of 1156387 is 7836511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1156387 - 2¹¹ = 1154339 is a prime.

It is not a weakly prime, because it can be changed into another prime (1156307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578193 + 578194.

It is an arithmetic number, because the mean of its divisors is an integer number (578194).

2^1156387 is an apocalyptic number.

1156387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156387 is an equidigital number, since it uses as much as digits as its factorization.

1156387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 31.

The square root of 1156387 is about 1075.3543601995. The cubic root of 1156387 is about 104.9625565660.

The spelling of 1156387 in words is "one million, one hundred fifty-six thousand, three hundred eighty-seven".