1375015 has 4 divisors (see below), whose sum is σ = 1650024. Its totient is φ = 1100008.

The previous prime is 1375013. The next prime is 1375019. The reversal of 1375015 is 5105731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5105731 = 31 ⋅164701.

It is a cyclic number.

It is not a de Polignac number, because 1375015 - 2¹ = 1375013 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137497 + ... + 137506.

It is an arithmetic number, because the mean of its divisors is an integer number (412506).

2^1375015 is an apocalyptic number.

1375015 is a deficient number, since it is larger than the sum of its proper divisors (275009).

1375015 is an equidigital number, since it uses as much as digits as its factorization.

1375015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275008.

The product of its (nonzero) digits is 525, while the sum is 22.

The square root of 1375015 is about 1172.6103359599. The cubic root of 1375015 is about 111.1994088870.

The spelling of 1375015 in words is "one million, three hundred seventy-five thousand, fifteen".