54213447 has 4 divisors (see below), whose sum is σ = 72284600. Its totient is φ = 36142296.

The previous prime is 54213421. The next prime is 54213449. The reversal of 54213447 is 74431245.

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

It is not a de Polignac number, because 54213447 - 2¹⁰ = 54212423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54213449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9035572 + ... + 9035577.

It is an arithmetic number, because the mean of its divisors is an integer number (18071150).

Almost surely, 2^54213447 is an apocalyptic number.

54213447 is a deficient number, since it is larger than the sum of its proper divisors (18071153).

54213447 is a wasteful number, since it uses less digits than its factorization.

54213447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18071152.

The product of its digits is 13440, while the sum is 30.

The square root of 54213447 is about 7362.9781338803. The cubic root of 54213447 is about 378.4736720314.

The spelling of 54213447 in words is "fifty-four million, two hundred thirteen thousand, four hundred forty-seven".