522661399 has 12 divisors (see below), whose sum is σ = 579770352. Its totient is φ = 470683200.

The previous prime is 522661387. The next prime is 522661409. The reversal of 522661399 is 993166225.

It is a de Polignac number, because none of the positive numbers 2^k-522661399 is a prime.

It is a super-3 number, since 3×522661399³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522661309) 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 11 ways as a sum of consecutive naturals, for example, 30787 + ... + 44644.

It is an arithmetic number, because the mean of its divisors is an integer number (48314196).

Almost surely, 2^522661399 is an apocalyptic number.

522661399 is a deficient number, since it is larger than the sum of its proper divisors (57108953).

522661399 is a wasteful number, since it uses less digits than its factorization.

522661399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75498 (or 75485 counting only the distinct ones).

The product of its digits is 174960, while the sum is 43.

The square root of 522661399 is about 22861.7890594765. The cubic root of 522661399 is about 805.5147096009.

The spelling of 522661399 in words is "five hundred twenty-two million, six hundred sixty-one thousand, three hundred ninety-nine".