54447064421 has 4 divisors (see below), whose sum is σ = 55775041644. Its totient is φ = 53119087200.

The previous prime is 54447064409. The next prime is 54447064439. The reversal of 54447064421 is 12446074445.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5234522500 + 49212541921 = 72350^2 + 221839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54447064421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 1327977181 = 54447064421 / (5 + 4 + 4 + 4 + 7 + 0 + 6 + 4 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54447064481) 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, 663988550 + ... + 663988631.

It is an arithmetic number, because the mean of its divisors is an integer number (13943760411).

Almost surely, 2^54447064421 is an apocalyptic number.

It is an amenable number.

54447064421 is a deficient number, since it is larger than the sum of its proper divisors (1327977223).

54447064421 is a wasteful number, since it uses less digits than its factorization.

54447064421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327977222.

The product of its (nonzero) digits is 430080, while the sum is 41.

The spelling of 54447064421 in words is "fifty-four billion, four hundred forty-seven million, sixty-four thousand, four hundred twenty-one".