521234002 has 4 divisors (see below), whose sum is σ = 781851006. Its totient is φ = 260617000.

The previous prime is 521233987. The next prime is 521234047. The reversal of 521234002 is 200432125.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 428862681 + 92371321 = 20709^2 + 9611^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130308499 + ... + 130308502.

Almost surely, 2^521234002 is an apocalyptic number.

521234002 is a deficient number, since it is larger than the sum of its proper divisors (260617004).

521234002 is a wasteful number, since it uses less digits than its factorization.

521234002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260617003.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 521234002 is about 22830.5497524698. The cubic root of 521234002 is about 804.7807496726.

Adding to 521234002 its reverse (200432125), we get a palindrome (721666127).

The spelling of 521234002 in words is "five hundred twenty-one million, two hundred thirty-four thousand, two".