1371917 has 4 divisors (see below), whose sum is σ = 1452636. Its totient is φ = 1291200.

The previous prime is 1371913. The next prime is 1371943. The reversal of 1371917 is 7191731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7191731 = 17 ⋅423043.

It can be written as a sum of positive squares in 2 ways, for example, as 1042441 + 329476 = 1021^2 + 574^2 .

It is a cyclic number.

It is not a de Polignac number, because 1371917 - 2² = 1371913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1371917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1371911) 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, 40334 + ... + 40367.

It is an arithmetic number, because the mean of its divisors is an integer number (363159).

2^1371917 is an apocalyptic number.

1371917 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1371917 is a deficient number, since it is larger than the sum of its proper divisors (80719).

1371917 is an equidigital number, since it uses as much as digits as its factorization.

1371917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80718.

The product of its digits is 1323, while the sum is 29.

The square root of 1371917 is about 1171.2886066209. The cubic root of 1371917 is about 111.1158328734.

The spelling of 1371917 in words is "one million, three hundred seventy-one thousand, nine hundred seventeen".