1371217 has 2 divisors, whose sum is σ = 1371218. Its totient is φ = 1371216.

The previous prime is 1371193. The next prime is 1371229. The reversal of 1371217 is 7121731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1132096 + 239121 = 1064^2 + 489^2 .

It is an emirp because it is prime and its reverse (7121731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1371217 - 2⁷ = 1371089 is a prime.

It is a super-2 number, since 2×1371217² = 3760472122178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1371017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685608 + 685609.

It is an arithmetic number, because the mean of its divisors is an integer number (685609).

2^1371217 is an apocalyptic number.

It is an amenable number.

1371217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371217 is an equidigital number, since it uses as much as digits as its factorization.

1371217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 294, while the sum is 22.

The square root of 1371217 is about 1170.9897523036. The cubic root of 1371217 is about 111.0969312645.

Adding to 1371217 its reverse (7121731), we get a palindrome (8492948).

The spelling of 1371217 in words is "one million, three hundred seventy-one thousand, two hundred seventeen".