55837589 has 2 divisors, whose sum is σ = 55837590. Its totient is φ = 55837588.

The previous prime is 55837559. The next prime is 55837591. The reversal of 55837589 is 98573855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28536964 + 27300625 = 5342^2 + 5225^2 .

It is a cyclic number.

It is not a de Polignac number, because 55837589 - 2¹² = 55833493 is a prime.

Together with 55837591, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55837549) 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, 27918794 + 27918795.

It is an arithmetic number, because the mean of its divisors is an integer number (27918795).

Almost surely, 2^55837589 is an apocalyptic number.

It is an amenable number.

55837589 is a deficient number, since it is larger than the sum of its proper divisors (1).

55837589 is an equidigital number, since it uses as much as digits as its factorization.

55837589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512000, while the sum is 50.

The square root of 55837589 is about 7472.4553528275. The cubic root of 55837589 is about 382.2160200110.

The spelling of 55837589 in words is "fifty-five million, eight hundred thirty-seven thousand, five hundred eighty-nine".