54020399 has 4 divisors (see below), whose sum is σ = 56369136. Its totient is φ = 51671664.

The previous prime is 54020387. The next prime is 54020423. The reversal of 54020399 is 99302045.

54020399 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.

It is a cyclic number.

It is not a de Polignac number, because 54020399 - 2⁸ = 54020143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54020299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1174334 + ... + 1174379.

It is an arithmetic number, because the mean of its divisors is an integer number (14092284).

Almost surely, 2^54020399 is an apocalyptic number.

54020399 is a deficient number, since it is larger than the sum of its proper divisors (2348737).

54020399 is a wasteful number, since it uses less digits than its factorization.

54020399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348736.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 54020399 is about 7349.8570734403. The cubic root of 54020399 is about 378.0239036609.

The spelling of 54020399 in words is "fifty-four million, twenty thousand, three hundred ninety-nine".