521023002 has 32 divisors (see below), whose sum is σ = 1112652288. Its totient is φ = 162258096.

The previous prime is 521022989. The next prime is 521023003. The reversal of 521023002 is 200320125.

It is a super-2 number, since 2×521023002² = 542929937226184008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (521023003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37968 + ... + 49835.

It is an arithmetic number, because the mean of its divisors is an integer number (34770384).

Almost surely, 2^521023002 is an apocalyptic number.

521023002 is an abundant number, since it is smaller than the sum of its proper divisors (591629286).

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

521023002 is a wasteful number, since it uses less digits than its factorization.

521023002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87874.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 521023002 is about 22825.9282834237. The cubic root of 521023002 is about 804.6721409633.

Adding to 521023002 its reverse (200320125), we get a palindrome (721343127).

The spelling of 521023002 in words is "five hundred twenty-one million, twenty-three thousand, two".