1375217 has 4 divisors (see below), whose sum is σ = 1377600. Its totient is φ = 1372836.

The previous prime is 1375211. The next prime is 1375219. The reversal of 1375217 is 7125731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1375217 - 2¹² = 1371121 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284 + ... + 1682.

It is an arithmetic number, because the mean of its divisors is an integer number (344400).

2^1375217 is an apocalyptic number.

It is an amenable number.

1375217 is a deficient number, since it is larger than the sum of its proper divisors (2383).

1375217 is an equidigital number, since it uses as much as digits as its factorization.

1375217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382.

The product of its digits is 1470, while the sum is 26.

The square root of 1375217 is about 1172.6964654163. The cubic root of 1375217 is about 111.2048539623.

The spelling of 1375217 in words is "one million, three hundred seventy-five thousand, two hundred seventeen".