523321081 has 16 divisors (see below), whose sum is σ = 570882816. Its totient is φ = 477709056.

The previous prime is 523321079. The next prime is 523321109. The reversal of 523321081 is 180123325.

It is a cyclic number.

It is not a de Polignac number, because 523321081 - 2¹ = 523321079 is a prime.

It is a super-2 number, since 2×523321081² = 547729907638017122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523321031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229710 + ... + 231976.

It is an arithmetic number, because the mean of its divisors is an integer number (35680176).

Almost surely, 2^523321081 is an apocalyptic number.

It is an amenable number.

523321081 is a deficient number, since it is larger than the sum of its proper divisors (47561735).

523321081 is a wasteful number, since it uses less digits than its factorization.

523321081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 523321081 is about 22876.2121208910. The cubic root of 523321081 is about 805.8534631092.

The spelling of 523321081 in words is "five hundred twenty-three million, three hundred twenty-one thousand, eighty-one".