1375563 has 16 divisors (see below), whose sum is σ = 2164736. Its totient is φ = 760320.

The previous prime is 1375547. The next prime is 1375567. The reversal of 1375563 is 3655731.

It is not a de Polignac number, because 1375563 - 2⁴ = 1375547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1375563.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375567) 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, 406 + ... + 1707.

It is an arithmetic number, because the mean of its divisors is an integer number (135296).

2^1375563 is an apocalyptic number.

1375563 is a deficient number, since it is larger than the sum of its proper divisors (789173).

1375563 is a wasteful number, since it uses less digits than its factorization.

1375563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154.

The product of its digits is 9450, while the sum is 30.

The square root of 1375563 is about 1172.8439793937. The cubic root of 1375563 is about 111.2141794368.

The spelling of 1375563 in words is "one million, three hundred seventy-five thousand, five hundred sixty-three".