521204002 has 16 divisors (see below), whose sum is σ = 856036224. Its totient is φ = 236034000.

The previous prime is 521203993. The next prime is 521204017. The reversal of 521204002 is 200402125.

It is a super-2 number, since 2×521204002² = 543307223401632008, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37749 + ... + 49672.

It is an arithmetic number, because the mean of its divisors is an integer number (53502264).

Almost surely, 2^521204002 is an apocalyptic number.

521204002 is a deficient number, since it is larger than the sum of its proper divisors (334832222).

521204002 is a wasteful number, since it uses less digits than its factorization.

521204002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87705.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 521204002 is about 22829.8927286135. The cubic root of 521204002 is about 804.7653094637.

Adding to 521204002 its reverse (200402125), we get a palindrome (721606127).

The spelling of 521204002 in words is "five hundred twenty-one million, two hundred four thousand, two".