1375897 has 4 divisors (see below), whose sum is σ = 1383220. Its totient is φ = 1368576.

The previous prime is 1375879. The next prime is 1375901. The reversal of 1375897 is 7985731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 594441 + 781456 = 771^2 + 884^2 .

It is a cyclic number.

It is not a de Polignac number, because 1375897 - 2⁷ = 1375769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375807) 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 in 3 ways as a sum of consecutive naturals, for example, 3372 + ... + 3757.

It is an arithmetic number, because the mean of its divisors is an integer number (345805).

2^1375897 is an apocalyptic number.

It is an amenable number.

1375897 is a deficient number, since it is larger than the sum of its proper divisors (7323).

1375897 is an equidigital number, since it uses as much as digits as its factorization.

1375897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7322.

The product of its digits is 52920, while the sum is 40.

The square root of 1375897 is about 1172.9863596820. The cubic root of 1375897 is about 111.2231800011.

The spelling of 1375897 in words is "one million, three hundred seventy-five thousand, eight hundred ninety-seven".