860522521 has 8 divisors (see below), whose sum is σ = 935033600. Its totient is φ = 788933520.

The previous prime is 860522519. The next prime is 860522527. The reversal of 860522521 is 125225068.

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 860522521 - 2¹ = 860522519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (860522527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729906 + ... + 731083.

It is an arithmetic number, because the mean of its divisors is an integer number (116879200).

Almost surely, 2^860522521 is an apocalyptic number.

It is an amenable number.

860522521 is a deficient number, since it is larger than the sum of its proper divisors (74511079).

860522521 is a wasteful number, since it uses less digits than its factorization.

860522521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461039.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 860522521 is about 29334.6641535232. The cubic root of 860522521 is about 951.1610996124.

Adding to 860522521 its reverse (125225068), we get a palindrome (985747589).

The spelling of 860522521 in words is "eight hundred sixty million, five hundred twenty-two thousand, five hundred twenty-one".