1375005 has 16 divisors (see below), whose sum is σ = 2271744. Its totient is φ = 709440.

The previous prime is 1374983. The next prime is 1375007. The reversal of 1375005 is 5005731.

It is a happy number.

It is not a de Polignac number, because 1375005 - 2⁶ = 1374941 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375007) 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 15 ways as a sum of consecutive naturals, for example, 1014 + ... + 1943.

It is an arithmetic number, because the mean of its divisors is an integer number (141984).

2^1375005 is an apocalyptic number.

1375005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1375005 is a deficient number, since it is larger than the sum of its proper divisors (896739).

1375005 is a wasteful number, since it uses less digits than its factorization.

1375005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996.

The product of its (nonzero) digits is 525, while the sum is 21.

The square root of 1375005 is about 1172.6060719611. The cubic root of 1375005 is about 111.1991393150.

The spelling of 1375005 in words is "one million, three hundred seventy-five thousand, five".