528317421 has 8 divisors (see below), whose sum is σ = 704627520. Its totient is φ = 352109472.

The previous prime is 528317417. The next prime is 528317423. The reversal of 528317421 is 124713825.

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

It is not a de Polignac number, because 528317421 - 2² = 528317417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528317423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12520 + ... + 34833.

It is an arithmetic number, because the mean of its divisors is an integer number (88078440).

Almost surely, 2^528317421 is an apocalyptic number.

It is an amenable number.

528317421 is a deficient number, since it is larger than the sum of its proper divisors (176310099).

528317421 is a wasteful number, since it uses less digits than its factorization.

528317421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51075.

The product of its digits is 13440, while the sum is 33.

The square root of 528317421 is about 22985.1565363388. The cubic root of 528317421 is about 808.4099381493.

The spelling of 528317421 in words is "five hundred twenty-eight million, three hundred seventeen thousand, four hundred twenty-one".