54251310321 has 24 divisors (see below), whose sum is σ = 84613663680. Its totient is φ = 33297306336.

The previous prime is 54251310317. The next prime is 54251310361. The reversal of 54251310321 is 12301315245.

54251310321 is a `hidden beast` number, since 5 + 4 + 25 + 1 + 310 + 321 = 666.

It is not a de Polignac number, because 54251310321 - 2² = 54251310317 is a prime.

It is a super-2 number, since 2×54251310321² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54251310361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 567381 + ... + 656066.

It is an arithmetic number, because the mean of its divisors is an integer number (3525569320).

Almost surely, 2^54251310321 is an apocalyptic number.

It is an amenable number.

54251310321 is a deficient number, since it is larger than the sum of its proper divisors (30362353359).

54251310321 is a wasteful number, since it uses less digits than its factorization.

54251310321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223845 (or 1223842 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 54251310321 its reverse (12301315245), we get a palindrome (66552625566).

The spelling of 54251310321 in words is "fifty-four billion, two hundred fifty-one million, three hundred ten thousand, three hundred twenty-one".