1315145 has 8 divisors (see below), whose sum is σ = 1699656. Its totient is φ = 971136.

The previous prime is 1315087. The next prime is 1315151. The reversal of 1315145 is 5415131.

1315145 = 109² + 110² + ... + 173².

It can be written as a sum of positive squares in 4 ways, for example, as 24649 + 1290496 = 157^2 + 1136^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1315145 - 2⁶ = 1315081 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10052 + ... + 10181.

It is an arithmetic number, because the mean of its divisors is an integer number (212457).

2^1315145 is an apocalyptic number.

It is an amenable number.

1315145 is a deficient number, since it is larger than the sum of its proper divisors (384511).

1315145 is a wasteful number, since it uses less digits than its factorization.

1315145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20251.

The product of its digits is 300, while the sum is 20.

The square root of 1315145 is about 1146.7977153797. The cubic root of 1315145 is about 109.5614772619.

The spelling of 1315145 in words is "one million, three hundred fifteen thousand, one hundred forty-five".