1125571 has 2 divisors, whose sum is σ = 1125572. Its totient is φ = 1125570.

The previous prime is 1125569. The next prime is 1125581. The reversal of 1125571 is 1755211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1125571 - 2¹ = 1125569 is a prime.

Together with 1125569, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1125581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562785 + 562786.

It is an arithmetic number, because the mean of its divisors is an integer number (562786).

2^1125571 is an apocalyptic number.

1125571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125571 is an equidigital number, since it uses as much as digits as its factorization.

1125571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 350, while the sum is 22.

The square root of 1125571 is about 1060.9293096149. The cubic root of 1125571 is about 104.0217841448.

The spelling of 1125571 in words is "one million, one hundred twenty-five thousand, five hundred seventy-one".