521260045321 has 8 divisors (see below), whose sum is σ = 535783090304. Its totient is φ = 506759891760.

The previous prime is 521260045291. The next prime is 521260045349. The reversal of 521260045321 is 123540062125.

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

It is a cyclic number.

It is not a de Polignac number, because 521260045321 - 2¹⁹ = 521259521033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521260045021) 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 7 ways as a sum of consecutive naturals, for example, 5676675 + ... + 5767768.

It is an arithmetic number, because the mean of its divisors is an integer number (66972886288).

Almost surely, 2^521260045321 is an apocalyptic number.

It is an amenable number.

521260045321 is a deficient number, since it is larger than the sum of its proper divisors (14523044983).

521260045321 is a wasteful number, since it uses less digits than its factorization.

521260045321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11445711.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 521260045321 in words is "five hundred twenty-one billion, two hundred sixty million, forty-five thousand, three hundred twenty-one".