521034413 has 4 divisors (see below), whose sum is σ = 522875808. Its totient is φ = 519193020.

The previous prime is 521034403. The next prime is 521034431. The reversal of 521034413 is 314430125.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 521034413 - 2²⁴ = 504257197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521034403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 920273 + ... + 920838.

It is an arithmetic number, because the mean of its divisors is an integer number (130718952).

Almost surely, 2^521034413 is an apocalyptic number.

It is an amenable number.

521034413 is a deficient number, since it is larger than the sum of its proper divisors (1841395).

521034413 is a wasteful number, since it uses less digits than its factorization.

521034413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841394.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 521034413 is about 22826.1782390307. The cubic root of 521034413 is about 804.6780153340.

Adding to 521034413 its reverse (314430125), we get a palindrome (835464538).

The spelling of 521034413 in words is "five hundred twenty-one million, thirty-four thousand, four hundred thirteen".