54336421 has 4 divisors (see below), whose sum is σ = 55227244. Its totient is φ = 53445600.

The previous prime is 54336413. The next prime is 54336427. The reversal of 54336421 is 12463345.

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 2927521 + 51408900 = 1711^2 + 7170^2 .

It is a cyclic number.

It is not a de Polignac number, because 54336421 - 2³ = 54336413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54336421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54336427) 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, 445320 + ... + 445441.

It is an arithmetic number, because the mean of its divisors is an integer number (13806811).

Almost surely, 2^54336421 is an apocalyptic number.

It is an amenable number.

54336421 is a deficient number, since it is larger than the sum of its proper divisors (890823).

54336421 is an equidigital number, since it uses as much as digits as its factorization.

54336421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890822.

The product of its digits is 8640, while the sum is 28.

The square root of 54336421 is about 7371.3242365263. The cubic root of 54336421 is about 378.7596236849.

Adding to 54336421 its reverse (12463345), we get a palindrome (66799766).

The spelling of 54336421 in words is "fifty-four million, three hundred thirty-six thousand, four hundred twenty-one".