1315500 has 48 divisors (see below), whose sum is σ = 3835104. Its totient is φ = 350400.

The previous prime is 1315493. The next prime is 1315507. The reversal of 1315500 is 55131.

It is an interprime number because it is at equal distance from previous prime (1315493) and next prime (1315507).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1315500.

It is not an unprimeable number, because it can be changed into a prime (1315507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1062 + ... + 1938.

It is an arithmetic number, because the mean of its divisors is an integer number (79898).

2^1315500 is an apocalyptic number.

1315500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1315500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1917552).

1315500 is an abundant number, since it is smaller than the sum of its proper divisors (2519604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1315500 is a wasteful number, since it uses less digits than its factorization.

1315500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 15.

The square root of 1315500 is about 1146.9524837586. The cubic root of 1315500 is about 109.5713344323.

The spelling of 1315500 in words is "one million, three hundred fifteen thousand, five hundred".