528243481 has 4 divisors (see below), whose sum is σ = 539482752. Its totient is φ = 517004212.

The previous prime is 528243449. The next prime is 528243511. The reversal of 528243481 is 184342825.

It is a happy number.

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 528243481 - 2⁵ = 528243449 is a prime.

It is a super-2 number, since 2×528243481² = 558082350437994722, 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 528243481.

It is not an unprimeable number, because it can be changed into a prime (528243181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5619565 + ... + 5619658.

It is an arithmetic number, because the mean of its divisors is an integer number (134870688).

Almost surely, 2^528243481 is an apocalyptic number.

It is an amenable number.

528243481 is a deficient number, since it is larger than the sum of its proper divisors (11239271).

528243481 is a wasteful number, since it uses less digits than its factorization.

528243481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11239270.

The product of its digits is 61440, while the sum is 37.

The square root of 528243481 is about 22983.5480507253. The cubic root of 528243481 is about 808.3722230578.

The spelling of 528243481 in words is "five hundred twenty-eight million, two hundred forty-three thousand, four hundred eighty-one".