54020004021 has 24 divisors (see below), whose sum is σ = 81960717696. Its totient is φ = 34219389600.

The previous prime is 54020004013. The next prime is 54020004023. The reversal of 54020004021 is 12040002045.

It is not a de Polignac number, because 54020004021 - 2³ = 54020004013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54020003985 and 54020004003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54020004023) 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, 832870 + ... + 895383.

It is an arithmetic number, because the mean of its divisors is an integer number (3415029904).

Almost surely, 2^54020004021 is an apocalyptic number.

It is an amenable number.

54020004021 is a deficient number, since it is larger than the sum of its proper divisors (27940713675).

54020004021 is a wasteful number, since it uses less digits than its factorization.

54020004021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728433 (or 1728430 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

Adding to 54020004021 its reverse (12040002045), we get a palindrome (66060006066).

The spelling of 54020004021 in words is "fifty-four billion, twenty million, four thousand, twenty-one".