1375445 has 8 divisors (see below), whose sum is σ = 1658880. Its totient is φ = 1094800.

The previous prime is 1375433. The next prime is 1375457. The reversal of 1375445 is 5445731.

It is an interprime number because it is at equal distance from previous prime (1375433) and next prime (1375457).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1375445 - 2⁸ = 1375189 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 620 + ... + 1770.

It is an arithmetic number, because the mean of its divisors is an integer number (207360).

2^1375445 is an apocalyptic number.

It is an amenable number.

1375445 is a deficient number, since it is larger than the sum of its proper divisors (283435).

1375445 is a wasteful number, since it uses less digits than its factorization.

1375445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395.

The product of its digits is 8400, while the sum is 29.

The square root of 1375445 is about 1172.7936732435. The cubic root of 1375445 is about 111.2109992484.

The spelling of 1375445 in words is "one million, three hundred seventy-five thousand, four hundred forty-five".