54523619821 has 8 divisors (see below), whose sum is σ = 59482167264. Its totient is φ = 49565381520.

The previous prime is 54523619803. The next prime is 54523619831. The reversal of 54523619821 is 12891632545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54523619821 is a prime.

It is a super-3 number, since 3×54523619821³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54523619831) 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, 444970 + ... + 554116.

It is an arithmetic number, because the mean of its divisors is an integer number (7435270908).

Almost surely, 2^54523619821 is an apocalyptic number.

It is an amenable number.

54523619821 is a deficient number, since it is larger than the sum of its proper divisors (4958547443).

54523619821 is a wasteful number, since it uses less digits than its factorization.

54523619821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154571.

The product of its digits is 518400, while the sum is 46.

The spelling of 54523619821 in words is "fifty-four billion, five hundred twenty-three million, six hundred nineteen thousand, eight hundred twenty-one".