1375823 has 2 divisors, whose sum is σ = 1375824. Its totient is φ = 1375822.

The previous prime is 1375819. The next prime is 1375853. The reversal of 1375823 is 3285731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1375823 - 2² = 1375819 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1375813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687911 + 687912.

It is an arithmetic number, because the mean of its divisors is an integer number (687912).

2^1375823 is an apocalyptic number.

1375823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375823 is an equidigital number, since it uses as much as digits as its factorization.

1375823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 1375823 is about 1172.9548158390. The cubic root of 1375823 is about 111.2211859898.

The spelling of 1375823 in words is "one million, three hundred seventy-five thousand, eight hundred twenty-three".