1317975 has 12 divisors (see below), whose sum is σ = 2179176. Its totient is φ = 702880.

The previous prime is 1317971. The next prime is 1317989. The reversal of 1317975 is 5797131.

It is not a de Polignac number, because 1317975 - 2² = 1317971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8712 + ... + 8861.

It is an arithmetic number, because the mean of its divisors is an integer number (181598).

2^1317975 is an apocalyptic number.

1317975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1317975 is a deficient number, since it is larger than the sum of its proper divisors (861201).

1317975 is a wasteful number, since it uses less digits than its factorization.

1317975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17586 (or 17581 counting only the distinct ones).

The product of its digits is 6615, while the sum is 33.

The square root of 1317975 is about 1148.0309229285. The cubic root of 1317975 is about 109.6400077270.

The spelling of 1317975 in words is "one million, three hundred seventeen thousand, nine hundred seventy-five".