538261005 has 16 divisors (see below), whose sum is σ = 869581440. Its totient is φ = 284284608.

The previous prime is 538260991. The next prime is 538261033. The reversal of 538261005 is 500162835.

It is not a de Polignac number, because 538261005 - 2⁹ = 538260493 is a prime.

It is a super-2 number, since 2×538261005² = 579449819007220050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172650 + ... + 175739.

It is an arithmetic number, because the mean of its divisors is an integer number (54348840).

Almost surely, 2^538261005 is an apocalyptic number.

It is an amenable number.

538261005 is a deficient number, since it is larger than the sum of its proper divisors (331320435).

538261005 is a wasteful number, since it uses less digits than its factorization.

538261005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348500.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 538261005 is about 23200.4526895490. The cubic root of 538261005 is about 813.4502044535.

The spelling of 538261005 in words is "five hundred thirty-eight million, two hundred sixty-one thousand, five".