1158481 has 2 divisors, whose sum is σ = 1158482. Its totient is φ = 1158480.

The previous prime is 1158473. The next prime is 1158491. The reversal of 1158481 is 1848511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 982081 + 176400 = 991^2 + 420^2 .

It is a cyclic number.

It is not a de Polignac number, because 1158481 - 2³ = 1158473 is a prime.

It is a super-2 number, since 2×1158481² = 2684156454722, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (1158401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579240 + 579241.

It is an arithmetic number, because the mean of its divisors is an integer number (579241).

2^1158481 is an apocalyptic number.

It is an amenable number.

1158481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158481 is an equidigital number, since it uses as much as digits as its factorization.

1158481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1280, while the sum is 28.

The square root of 1158481 is about 1076.3275523743. The cubic root of 1158481 is about 105.0258741980.

The spelling of 1158481 in words is "one million, one hundred fifty-eight thousand, four hundred eighty-one".