538005533 has 4 divisors (see below), whose sum is σ = 579390588. Its totient is φ = 496620480.

The previous prime is 538005509. The next prime is 538005541. The reversal of 538005533 is 335500835.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 222516889 + 315488644 = 14917^2 + 17762^2 .

It is a cyclic number.

It is not a de Polignac number, because 538005533 - 2⁶ = 538005469 is a prime.

It is a super-2 number, since 2×538005533² = 578899907077228178, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 538005533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538005233) 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, 20692508 + ... + 20692533.

It is an arithmetic number, because the mean of its divisors is an integer number (144847647).

Almost surely, 2^538005533 is an apocalyptic number.

It is an amenable number.

538005533 is a deficient number, since it is larger than the sum of its proper divisors (41385055).

538005533 is a wasteful number, since it uses less digits than its factorization.

538005533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41385054.

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 538005533 is about 23194.9462814640. The cubic root of 538005533 is about 813.3214895518.

The spelling of 538005533 in words is "five hundred thirty-eight million, five thousand, five hundred thirty-three".