521330411 has 8 divisors (see below), whose sum is σ = 598126560. Its totient is φ = 445114368.

The previous prime is 521330393. The next prime is 521330471. The reversal of 521330411 is 114033125.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521330411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521330471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143096 + ... + 146693.

It is an arithmetic number, because the mean of its divisors is an integer number (74765820).

Almost surely, 2^521330411 is an apocalyptic number.

521330411 is a deficient number, since it is larger than the sum of its proper divisors (76796149).

521330411 is a wasteful number, since it uses less digits than its factorization.

521330411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290053.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 521330411 is about 22832.6610582297. The cubic root of 521330411 is about 804.8303648319.

Adding to 521330411 its reverse (114033125), we get a palindrome (635363536).

The spelling of 521330411 in words is "five hundred twenty-one million, three hundred thirty thousand, four hundred eleven".