54533123312421 has 16 divisors (see below), whose sum is σ = 80420295503744. Its totient is φ = 32651849300544.

The previous prime is 54533123312389. The next prime is 54533123312429. The reversal of 54533123312421 is 12421332133545.

It is a happy number.

It is not a de Polignac number, because 54533123312421 - 2⁵ = 54533123312389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54533123312421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54533123312429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18895744681 + ... + 18895747566.

It is an arithmetic number, because the mean of its divisors is an integer number (5026268468984).

Almost surely, 2^{54533123312421} is an apocalyptic number.

It is an amenable number.

54533123312421 is a deficient number, since it is larger than the sum of its proper divisors (25887172191323).

54533123312421 is a wasteful number, since it uses less digits than its factorization.

54533123312421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37791492300.

The product of its digits is 259200, while the sum is 39.

Adding to 54533123312421 its reverse (12421332133545), we get a palindrome (66954455445966).

The spelling of 54533123312421 in words is "fifty-four trillion, five hundred thirty-three billion, one hundred twenty-three million, three hundred twelve thousand, four hundred twenty-one".