1315897 has 4 divisors (see below), whose sum is σ = 1435536. Its totient is φ = 1196260.

The previous prime is 1315891. The next prime is 1315901. The reversal of 1315897 is 7985131.

It is a happy number.

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 1315897 - 2³ = 1315889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315891) 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, 59803 + ... + 59824.

It is an arithmetic number, because the mean of its divisors is an integer number (358884).

2^1315897 is an apocalyptic number.

It is an amenable number.

1315897 is a deficient number, since it is larger than the sum of its proper divisors (119639).

1315897 is a wasteful number, since it uses less digits than its factorization.

1315897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119638.

The product of its digits is 7560, while the sum is 34.

The square root of 1315897 is about 1147.1255380297. The cubic root of 1315897 is about 109.5823557030.

The spelling of 1315897 in words is "one million, three hundred fifteen thousand, eight hundred ninety-seven".