521522054423 has 8 divisors (see below), whose sum is σ = 524785926480. Its totient is φ = 518268119040.

The previous prime is 521522054399. The next prime is 521522054429. The reversal of 521522054423 is 324450225125.

It is a happy number.

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 521522054423 - 2¹⁴ = 521522038039 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 (521522054429) 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, 2378858 + ... + 2588823.

It is an arithmetic number, because the mean of its divisors is an integer number (65598240810).

Almost surely, 2^521522054423 is an apocalyptic number.

521522054423 is a deficient number, since it is larger than the sum of its proper divisors (3263872057).

521522054423 is a wasteful number, since it uses less digits than its factorization.

521522054423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4968337.

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 521522054423 its reverse (324450225125), we get a palindrome (845972279548).

The spelling of 521522054423 in words is "five hundred twenty-one billion, five hundred twenty-two million, fifty-four thousand, four hundred twenty-three".