1315172 has 12 divisors (see below), whose sum is σ = 2314620. Its totient is φ = 653856.

The previous prime is 1315159. The next prime is 1315177. The reversal of 1315172 is 2715131.

It can be written as a sum of positive squares in 2 ways, for example, as 1069156 + 246016 = 1034^2 + 496^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1315177) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 47 + ... + 1622.

It is an arithmetic number, because the mean of its divisors is an integer number (192885).

2^1315172 is an apocalyptic number.

It is an amenable number.

1315172 is a deficient number, since it is larger than the sum of its proper divisors (999448).

1315172 is a wasteful number, since it uses less digits than its factorization.

1315172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870 (or 1868 counting only the distinct ones).

The product of its digits is 210, while the sum is 20.

The square root of 1315172 is about 1146.8094872297. The cubic root of 1315172 is about 109.5622270245.

The spelling of 1315172 in words is "one million, three hundred fifteen thousand, one hundred seventy-two".