536812081 has 4 divisors (see below), whose sum is σ = 578105332. Its totient is φ = 495518832.

The previous prime is 536812061. The next prime is 536812093. The reversal of 536812081 is 180218635.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180218635 = 5 ⋅36043727.

It can be written as a sum of positive squares in 2 ways, for example, as 242861056 + 293951025 = 15584^2 + 17145^2 .

It is a cyclic number.

It is not a de Polignac number, because 536812081 - 2⁵ = 536812049 is a prime.

It is a super-2 number, since 2×536812081² = 576334420615101122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (536812061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20646606 + ... + 20646631.

It is an arithmetic number, because the mean of its divisors is an integer number (144526333).

Almost surely, 2^536812081 is an apocalyptic number.

It is an amenable number.

536812081 is a deficient number, since it is larger than the sum of its proper divisors (41293251).

536812081 is a wasteful number, since it uses less digits than its factorization.

536812081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41293250.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 536812081 is about 23169.2054460225. The cubic root of 536812081 is about 812.7196501532.

The spelling of 536812081 in words is "five hundred thirty-six million, eight hundred twelve thousand, eighty-one".