538525081 has 4 divisors (see below), whose sum is σ = 538636032. Its totient is φ = 538414132.

The previous prime is 538525079. The next prime is 538525109. The reversal of 538525081 is 180525835.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 538525081 - 2¹ = 538525079 is a prime.

It is a super-2 number, since 2×538525081² = 580018525732113122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 538525081.

It is not an unprimeable number, because it can be changed into a prime (538525051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47845 + ... + 58018.

It is an arithmetic number, because the mean of its divisors is an integer number (134659008).

Almost surely, 2^538525081 is an apocalyptic number.

It is an amenable number.

538525081 is a deficient number, since it is larger than the sum of its proper divisors (110951).

538525081 is a wasteful number, since it uses less digits than its factorization.

538525081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110950.

The product of its (nonzero) digits is 48000, while the sum is 37.

The square root of 538525081 is about 23206.1431737374. The cubic root of 538525081 is about 813.5832115226.

The spelling of 538525081 in words is "five hundred thirty-eight million, five hundred twenty-five thousand, eighty-one".