1158761 has 2 divisors, whose sum is σ = 1158762. Its totient is φ = 1158760.

The previous prime is 1158757. The next prime is 1158769. The reversal of 1158761 is 1678511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1155625 + 3136 = 1075^2 + 56^2 .

It is a cyclic number.

It is not a de Polignac number, because 1158761 - 2² = 1158757 is a prime.

It is not a weakly prime, because it can be changed into another prime (1158769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579380 + 579381.

It is an arithmetic number, because the mean of its divisors is an integer number (579381).

2^1158761 is an apocalyptic number.

It is an amenable number.

1158761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158761 is an equidigital number, since it uses as much as digits as its factorization.

1158761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 29.

The square root of 1158761 is about 1076.4576164439. The cubic root of 1158761 is about 105.0343349542.

The spelling of 1158761 in words is "one million, one hundred fifty-eight thousand, seven hundred sixty-one".