54639589 has 2 divisors, whose sum is σ = 54639590. Its totient is φ = 54639588.

The previous prime is 54639587. The next prime is 54639601. The reversal of 54639589 is 98593645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32970564 + 21669025 = 5742^2 + 4655^2 .

It is a cyclic number.

It is not a de Polignac number, because 54639589 - 2¹ = 54639587 is a prime.

Together with 54639587, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54639583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27319794 + 27319795.

It is an arithmetic number, because the mean of its divisors is an integer number (27319795).

Almost surely, 2^54639589 is an apocalyptic number.

It is an amenable number.

54639589 is a deficient number, since it is larger than the sum of its proper divisors (1).

54639589 is an equidigital number, since it uses as much as digits as its factorization.

54639589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 49.

The square root of 54639589 is about 7391.8596442303. The cubic root of 54639589 is about 379.4627426113.

The spelling of 54639589 in words is "fifty-four million, six hundred thirty-nine thousand, five hundred eighty-nine".