54661589 has 2 divisors, whose sum is σ = 54661590. Its totient is φ = 54661588.

The previous prime is 54661583. The next prime is 54661619. The reversal of 54661589 is 98516645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41280625 + 13380964 = 6425^2 + 3658^2 .

It is a cyclic number.

It is not a de Polignac number, because 54661589 - 2⁴ = 54661573 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 (54661583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27330794 + 27330795.

It is an arithmetic number, because the mean of its divisors is an integer number (27330795).

Almost surely, 2^54661589 is an apocalyptic number.

It is an amenable number.

54661589 is a deficient number, since it is larger than the sum of its proper divisors (1).

54661589 is an equidigital number, since it uses as much as digits as its factorization.

54661589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 44.

The square root of 54661589 is about 7393.3476179604. The cubic root of 54661589 is about 379.5136645424.

The spelling of 54661589 in words is "fifty-four million, six hundred sixty-one thousand, five hundred eighty-nine".