521504314 has 4 divisors (see below), whose sum is σ = 782256474. Its totient is φ = 260752156.

The previous prime is 521504281. The next prime is 521504317. The reversal of 521504314 is 413405125.

It is a happy number.

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., 461519289 + 59985025 = 21483^2 + 7745^2 .

It is a super-3 number, since 3×521504314³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (521504317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130376077 + ... + 130376080.

Almost surely, 2^521504314 is an apocalyptic number.

521504314 is a deficient number, since it is larger than the sum of its proper divisors (260752160).

521504314 is a wasteful number, since it uses less digits than its factorization.

521504314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260752159.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 521504314 is about 22836.4689477161. The cubic root of 521504314 is about 804.9198454199.

Adding to 521504314 its reverse (413405125), we get a palindrome (934909439).

The spelling of 521504314 in words is "five hundred twenty-one million, five hundred four thousand, three hundred fourteen".