1375533 has 6 divisors (see below), whose sum is σ = 1986894. Its totient is φ = 917016.

The previous prime is 1375531. The next prime is 1375547. The reversal of 1375533 is 3355731.

It can be written as a sum of positive squares in only one way, i.e., 915849 + 459684 = 957^2 + 678^2 .

It is not a de Polignac number, because 1375533 - 2¹ = 1375531 is a prime.

It is a super-3 number, since 3×1375533³ = 7807900969180633311, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1375497 and 1375506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375531) 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 5 ways as a sum of consecutive naturals, for example, 76410 + ... + 76427.

It is an arithmetic number, because the mean of its divisors is an integer number (331149).

2^1375533 is an apocalyptic number.

It is an amenable number.

1375533 is a deficient number, since it is larger than the sum of its proper divisors (611361).

1375533 is a wasteful number, since it uses less digits than its factorization.

1375533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152843 (or 152840 counting only the distinct ones).

The product of its digits is 4725, while the sum is 27.

The square root of 1375533 is about 1172.8311898990. The cubic root of 1375533 is about 111.2133709316.

The spelling of 1375533 in words is "one million, three hundred seventy-five thousand, five hundred thirty-three".