522542130221521 has 8 divisors (see below), whose sum is σ = 539035385620544. Its totient is φ = 506304584208720.

The previous prime is 522542130221491. The next prime is 522542130221561. The reversal of 522542130221521 is 125122031245225.

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 522542130221521 - 2¹³ = 522542130213329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (522542130221561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63927342405 + ... + 63927350578.

It is an arithmetic number, because the mean of its divisors is an integer number (67379423202568).

Almost surely, 2^{522542130221521} is an apocalyptic number.

It is an amenable number.

522542130221521 is a deficient number, since it is larger than the sum of its proper divisors (16493255399023).

522542130221521 is a wasteful number, since it uses less digits than its factorization.

522542130221521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127854693111.

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 522542130221521 its reverse (125122031245225), we get a palindrome (647664161466746).

The spelling of 522542130221521 in words is "five hundred twenty-two trillion, five hundred forty-two billion, one hundred thirty million, two hundred twenty-one thousand, five hundred twenty-one".