1172491 has 2 divisors, whose sum is σ = 1172492. Its totient is φ = 1172490.

The previous prime is 1172467. The next prime is 1172497. The reversal of 1172491 is 1942711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1172491 - 2⁹ = 1171979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1172497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586245 + 586246.

It is an arithmetic number, because the mean of its divisors is an integer number (586246).

2^1172491 is an apocalyptic number.

1172491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1172491 is an equidigital number, since it uses as much as digits as its factorization.

1172491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 25.

The square root of 1172491 is about 1082.8162355635. The cubic root of 1172491 is about 105.4475529765.

The spelling of 1172491 in words is "one million, one hundred seventy-two thousand, four hundred ninety-one".