1375571 has 2 divisors, whose sum is σ = 1375572. Its totient is φ = 1375570.

The previous prime is 1375567. The next prime is 1375597. The reversal of 1375571 is 1755731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1375571 - 2² = 1375567 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1375531) 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, 687785 + 687786.

It is an arithmetic number, because the mean of its divisors is an integer number (687786).

2^1375571 is an apocalyptic number.

1375571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375571 is an equidigital number, since it uses as much as digits as its factorization.

1375571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3675, while the sum is 29.

The square root of 1375571 is about 1172.8473899020. The cubic root of 1375571 is about 111.2143950362.

The spelling of 1375571 in words is "one million, three hundred seventy-five thousand, five hundred seventy-one".