536306021 has 4 divisors (see below), whose sum is σ = 567853452. Its totient is φ = 504758592.

The previous prime is 536306011. The next prime is 536306039. The reversal of 536306021 is 120603635.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120603635 = 5 ⋅24120727.

It can be written as a sum of positive squares in 2 ways, for example, as 450076225 + 86229796 = 21215^2 + 9286^2 .

It is a cyclic number.

It is not a de Polignac number, because 536306021 - 2¹⁸ = 536043877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (536306011) 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, 15773690 + ... + 15773723.

It is an arithmetic number, because the mean of its divisors is an integer number (141963363).

Almost surely, 2^536306021 is an apocalyptic number.

It is an amenable number.

536306021 is a deficient number, since it is larger than the sum of its proper divisors (31547431).

536306021 is a wasteful number, since it uses less digits than its factorization.

536306021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31547430.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 536306021 is about 23158.2819095027. The cubic root of 536306021 is about 812.4641825947.

Adding to 536306021 its reverse (120603635), we get a palindrome (656909656).

The spelling of 536306021 in words is "five hundred thirty-six million, three hundred six thousand, twenty-one".