54643439 has 2 divisors, whose sum is σ = 54643440. Its totient is φ = 54643438.

The previous prime is 54643429. The next prime is 54643451. The reversal of 54643439 is 93434645.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54643439 - 2¹⁶ = 54577903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54643429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27321719 + 27321720.

It is an arithmetic number, because the mean of its divisors is an integer number (27321720).

Almost surely, 2^54643439 is an apocalyptic number.

54643439 is a deficient number, since it is larger than the sum of its proper divisors (1).

54643439 is an equidigital number, since it uses as much as digits as its factorization.

54643439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 38.

The square root of 54643439 is about 7392.1200612544. The cubic root of 54643439 is about 379.4716549358.

The spelling of 54643439 in words is "fifty-four million, six hundred forty-three thousand, four hundred thirty-nine".