54535430021 has 4 divisors (see below), whose sum is σ = 55225752000. Its totient is φ = 53845108044.

The previous prime is 54535429969. The next prime is 54535430149. The reversal of 54535430021 is 12003453545.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54535430021 - 2⁶ = 54535429957 is a prime.

It is a super-2 number, since 2×54535430021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 54535430021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54535430921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345160871 + ... + 345161028.

It is an arithmetic number, because the mean of its divisors is an integer number (13806438000).

Almost surely, 2^54535430021 is an apocalyptic number.

It is an amenable number.

54535430021 is a deficient number, since it is larger than the sum of its proper divisors (690321979).

54535430021 is an equidigital number, since it uses as much as digits as its factorization.

54535430021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690321978.

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 54535430021 its reverse (12003453545), we get a palindrome (66538883566).

The spelling of 54535430021 in words is "fifty-four billion, five hundred thirty-five million, four hundred thirty thousand, twenty-one".