521116002 has 96 divisors (see below), whose sum is σ = 1315491840. Its totient is φ = 147420000.

The previous prime is 521115997. The next prime is 521116003. The reversal of 521116002 is 200611125.

521116002 is a `hidden beast` number, since 52 + 1 + 11 + 600 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (521116003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 266127 + ... + 268077.

It is an arithmetic number, because the mean of its divisors is an integer number (13703040).

Almost surely, 2^521116002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521116002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (657745920).

521116002 is an abundant number, since it is smaller than the sum of its proper divisors (794375838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

521116002 is a wasteful number, since it uses less digits than its factorization.

521116002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060 (or 2057 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 521116002 is about 22827.9653495444. The cubic root of 521116002 is about 804.7200147658.

Adding to 521116002 its reverse (200611125), we get a palindrome (721727127).

The spelling of 521116002 in words is "five hundred twenty-one million, one hundred sixteen thousand, two".