538005091 has 8 divisors (see below), whose sum is σ = 584519040. Its totient is φ = 492223872.

The previous prime is 538005073. The next prime is 538005119. The reversal of 538005091 is 190500835.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 538005091 - 2⁵ = 538005059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538005991) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 181651 + ... + 184588.

It is an arithmetic number, because the mean of its divisors is an integer number (73064880).

Almost surely, 2^538005091 is an apocalyptic number.

538005091 is a deficient number, since it is larger than the sum of its proper divisors (46513949).

538005091 is a wasteful number, since it uses less digits than its factorization.

538005091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366365.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 538005091 is about 23194.9367535245. The cubic root of 538005091 is about 813.3212668228.

The spelling of 538005091 in words is "five hundred thirty-eight million, five thousand, ninety-one".