1315445 has 4 divisors (see below), whose sum is σ = 1578540. Its totient is φ = 1052352.

The previous prime is 1315441. The next prime is 1315451. The reversal of 1315445 is 5445131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5445131 = 113 ⋅48187.

It can be written as a sum of positive squares in 2 ways, for example, as 703921 + 611524 = 839^2 + 782^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315445 - 2² = 1315441 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1315445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315441) 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, 131540 + ... + 131549.

It is an arithmetic number, because the mean of its divisors is an integer number (394635).

2^1315445 is an apocalyptic number.

It is an amenable number.

1315445 is a deficient number, since it is larger than the sum of its proper divisors (263095).

1315445 is an equidigital number, since it uses as much as digits as its factorization.

1315445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263094.

The product of its digits is 1200, while the sum is 23.

The square root of 1315445 is about 1146.9285069262. The cubic root of 1315445 is about 109.5698073812.

The spelling of 1315445 in words is "one million, three hundred fifteen thousand, four hundred forty-five".