521034065 has 8 divisors (see below), whose sum is σ = 652425408. Its totient is φ = 398704240.

The previous prime is 521034013. The next prime is 521034079. The reversal of 521034065 is 560430125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 521034065 - 2¹⁸ = 520771921 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2265251 + ... + 2265480.

It is an arithmetic number, because the mean of its divisors is an integer number (81553176).

Almost surely, 2^521034065 is an apocalyptic number.

It is an amenable number.

521034065 is a deficient number, since it is larger than the sum of its proper divisors (131391343).

521034065 is a wasteful number, since it uses less digits than its factorization.

521034065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4530759.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 521034065 is about 22826.1706162028. The cubic root of 521034065 is about 804.6778361852.

The spelling of 521034065 in words is "five hundred twenty-one million, thirty-four thousand, sixty-five".