1315917 has 6 divisors (see below), whose sum is σ = 1900782. Its totient is φ = 877272.

The previous prime is 1315907. The next prime is 1315927. The reversal of 1315917 is 7195131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1315907) and next prime (1315927).

It can be written as a sum of positive squares in only one way, i.e., 1313316 + 2601 = 1146^2 + 51^2 .

It is not a de Polignac number, because 1315917 - 2⁴ = 1315901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73098 + ... + 73115.

It is an arithmetic number, because the mean of its divisors is an integer number (316797).

2^1315917 is an apocalyptic number.

It is an amenable number.

1315917 is a deficient number, since it is larger than the sum of its proper divisors (584865).

1315917 is a wasteful number, since it uses less digits than its factorization.

1315917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146219 (or 146216 counting only the distinct ones).

The product of its digits is 945, while the sum is 27.

The square root of 1315917 is about 1147.1342554383. The cubic root of 1315917 is about 109.5829108721.

The spelling of 1315917 in words is "one million, three hundred fifteen thousand, nine hundred seventeen".