522039893 has 8 divisors (see below), whose sum is σ = 553047768. Its totient is φ = 491065344.

The previous prime is 522039853. The next prime is 522039911. The reversal of 522039893 is 398930225.

It can be written as a sum of positive squares in 4 ways, for example, as 20593444 + 501446449 = 4538^2 + 22393^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-522039893 is a prime.

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 522039893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522039803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28655 + ... + 43187.

It is an arithmetic number, because the mean of its divisors is an integer number (69130971).

Almost surely, 2^522039893 is an apocalyptic number.

It is an amenable number.

522039893 is a deficient number, since it is larger than the sum of its proper divisors (31007875).

522039893 is a wasteful number, since it uses less digits than its factorization.

522039893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16663.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 522039893 is about 22848.1923355000. The cubic root of 522039893 is about 805.1952989881.

The spelling of 522039893 in words is "five hundred twenty-two million, thirty-nine thousand, eight hundred ninety-three".