1043591 has 2 divisors, whose sum is σ = 1043592. Its totient is φ = 1043590.

The previous prime is 1043587. The next prime is 1043593. The reversal of 1043591 is 1953401.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1043591 - 2² = 1043587 is a prime.

Together with 1043593, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1043593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521795 + 521796.

It is an arithmetic number, because the mean of its divisors is an integer number (521796).

2^1043591 is an apocalyptic number.

1043591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043591 is an equidigital number, since it uses as much as digits as its factorization.

1043591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1043591 is about 1021.5630181247. The cubic root of 1043591 is about 101.4324171750.

Adding to 1043591 its reverse (1953401), we get a palindrome (2996992).

The spelling of 1043591 in words is "one million, forty-three thousand, five hundred ninety-one".