1315540 has 12 divisors (see below), whose sum is σ = 2762676. Its totient is φ = 526208.

The previous prime is 1315537. The next prime is 1315543. The reversal of 1315540 is 455131.

It is an interprime number because it is at equal distance from previous prime (1315537) and next prime (1315543).

It can be written as a sum of positive squares in 2 ways, for example, as 669124 + 646416 = 818^2 + 804^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315543) 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, 32869 + ... + 32908.

It is an arithmetic number, because the mean of its divisors is an integer number (230223).

2^1315540 is an apocalyptic number.

1315540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315540 is an abundant number, since it is smaller than the sum of its proper divisors (1447136).

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

1315540 is a wasteful number, since it uses less digits than its factorization.

1315540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65786 (or 65784 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1315540 is about 1146.9699211400. The cubic root of 1315540 is about 109.5724449882.

It can be divided in two parts, 131 and 5540, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 1315540 in words is "one million, three hundred fifteen thousand, five hundred forty".