54223143126521 has 8 divisors (see below), whose sum is σ = 54766268687520. Its totient is φ = 53682686487808.

The previous prime is 54223143126457. The next prime is 54223143126553. The reversal of 54223143126521 is 12562134132245.

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 54223143126521 - 2⁶ = 54223143126457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54223143120521) 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, 667189736 + ... + 667271001.

It is an arithmetic number, because the mean of its divisors is an integer number (6845783585940).

Almost surely, 2^{54223143126521} is an apocalyptic number.

It is an amenable number.

54223143126521 is a deficient number, since it is larger than the sum of its proper divisors (543125560999).

54223143126521 is a wasteful number, since it uses less digits than its factorization.

54223143126521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334461143.

The product of its digits is 345600, while the sum is 41.

Adding to 54223143126521 its reverse (12562134132245), we get a palindrome (66785277258766).

The spelling of 54223143126521 in words is "fifty-four trillion, two hundred twenty-three billion, one hundred forty-three million, one hundred twenty-six thousand, five hundred twenty-one".