54682320521 has 2 divisors, whose sum is σ = 54682320522. Its totient is φ = 54682320520.

The previous prime is 54682320499. The next prime is 54682320551. The reversal of 54682320521 is 12502328645.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53366082121 + 1316238400 = 231011^2 + 36280^2 .

It is a cyclic number.

It is not a de Polignac number, because 54682320521 - 2¹⁴ = 54682304137 is a prime.

It is a super-2 number, since 2×54682320521² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54682320551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27341160260 + 27341160261.

It is an arithmetic number, because the mean of its divisors is an integer number (27341160261).

Almost surely, 2^54682320521 is an apocalyptic number.

It is an amenable number.

54682320521 is a deficient number, since it is larger than the sum of its proper divisors (1).

54682320521 is an equidigital number, since it uses as much as digits as its factorization.

54682320521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 54682320521 in words is "fifty-four billion, six hundred eighty-two million, three hundred twenty thousand, five hundred twenty-one".