1161547 has 2 divisors, whose sum is σ = 1161548. Its totient is φ = 1161546.

The previous prime is 1161529. The next prime is 1161551. The reversal of 1161547 is 7451611.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1161547 - 2¹⁵ = 1128779 is a prime.

It is not a weakly prime, because it can be changed into another prime (1161047) 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, 580773 + 580774.

It is an arithmetic number, because the mean of its divisors is an integer number (580774).

2^1161547 is an apocalyptic number.

1161547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161547 is an equidigital number, since it uses as much as digits as its factorization.

1161547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 25.

The square root of 1161547 is about 1077.7508988630. The cubic root of 1161547 is about 105.1184453246.

Subtracting 1161547 from its reverse (7451611), we obtain a square (6290064 = 2508²).

The spelling of 1161547 in words is "one million, one hundred sixty-one thousand, five hundred forty-seven".