1081533 has 4 divisors (see below), whose sum is σ = 1442048. Its totient is φ = 721020.

The previous prime is 1081513. The next prime is 1081541. The reversal of 1081533 is 3351801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3351801 = 3 ⋅1117267.

It is not a de Polignac number, because 1081533 - 2⁵ = 1081501 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180253 + ... + 180258.

It is an arithmetic number, because the mean of its divisors is an integer number (360512).

2^1081533 is an apocalyptic number.

It is an amenable number.

1081533 is a deficient number, since it is larger than the sum of its proper divisors (360515).

1081533 is an equidigital number, since it uses as much as digits as its factorization.

1081533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360514.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1081533 is about 1039.9677879627. The cubic root of 1081533 is about 102.6470781672.

The spelling of 1081533 in words is "one million, eighty-one thousand, five hundred thirty-three".