852417521 has 8 divisors (see below), whose sum is σ = 871513344. Its totient is φ = 833361760.

The previous prime is 852417491. The next prime is 852417541. The reversal of 852417521 is 125714258.

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

It is a cyclic number.

It is not a de Polignac number, because 852417521 - 2⁶ = 852417457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (852417541) 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 7 ways as a sum of consecutive naturals, for example, 35276 + ... + 54306.

It is an arithmetic number, because the mean of its divisors is an integer number (108939168).

Almost surely, 2^852417521 is an apocalyptic number.

It is an amenable number.

852417521 is a deficient number, since it is larger than the sum of its proper divisors (19095823).

852417521 is a wasteful number, since it uses less digits than its factorization.

852417521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20031.

The product of its digits is 22400, while the sum is 35.

The square root of 852417521 is about 29196.1901795423. The cubic root of 852417521 is about 948.1654423673.

The spelling of 852417521 in words is "eight hundred fifty-two million, four hundred seventeen thousand, five hundred twenty-one".