54454043601521 has 4 divisors (see below), whose sum is σ = 54463237266672. Its totient is φ = 54444849936372.

The previous prime is 54454043601479. The next prime is 54454043601527. The reversal of 54454043601521 is 12510634045445.

It is a happy number.

54454043601521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-54454043601521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54454043601527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4596823691 + ... + 4596835536.

It is an arithmetic number, because the mean of its divisors is an integer number (13615809316668).

Almost surely, 2^{54454043601521} is an apocalyptic number.

It is an amenable number.

54454043601521 is a deficient number, since it is larger than the sum of its proper divisors (9193665151).

54454043601521 is an equidigital number, since it uses as much as digits as its factorization.

54454043601521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9193665150.

The product of its (nonzero) digits is 1152000, while the sum is 44.

Adding to 54454043601521 its reverse (12510634045445), we get a palindrome (66964677646966).

The spelling of 54454043601521 in words is "fifty-four trillion, four hundred fifty-four billion, forty-three million, six hundred one thousand, five hundred twenty-one".