8081533 has 6 divisors (see below), whose sum is σ = 8448734. Its totient is φ = 7729656.

The previous prime is 8081527. The next prime is 8081537. The reversal of 8081533 is 3351808.

It can be written as a sum of positive squares in only one way, i.e., 5184729 + 2896804 = 2277^2 + 1702^2 .

It is not a de Polignac number, because 8081533 - 2⁵ = 8081501 is a prime.

It is a super-2 number, since 2×8081533² = 130622351260178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8081537) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7110 + ... + 8167.

Almost surely, 2^8081533 is an apocalyptic number.

It is an amenable number.

8081533 is a deficient number, since it is larger than the sum of its proper divisors (367201).

8081533 is a wasteful number, since it uses less digits than its factorization.

8081533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15323 (or 15300 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 8081533 is about 2842.8037216804. The cubic root of 8081533 is about 200.6771464427.

It can be divided in two parts, 80815 and 33, that multiplied together give a triangular number (2666895 = T₂₃₀₉).

The spelling of 8081533 in words is "eight million, eighty-one thousand, five hundred thirty-three".