1161481 has 2 divisors, whose sum is σ = 1161482. Its totient is φ = 1161480.

The previous prime is 1161463. The next prime is 1161487. The reversal of 1161481 is 1841611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1121481 + 40000 = 1059^2 + 200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1161481 - 2⁵ = 1161449 is a prime.

It is a super-2 number, since 2×1161481² = 2698076226722, which contains 22 as substring.

It is a Chen prime.

It is equal to p₉₀₁₃₉ and since 1161481 and 90139 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (1161487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580740 + 580741.

It is an arithmetic number, because the mean of its divisors is an integer number (580741).

2^1161481 is an apocalyptic number.

It is an amenable number.

1161481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161481 is an equidigital number, since it uses as much as digits as its factorization.

1161481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 22.

The square root of 1161481 is about 1077.7202791077. The cubic root of 1161481 is about 105.1164543164.

The spelling of 1161481 in words is "one million, one hundred sixty-one thousand, four hundred eighty-one".