55740439 has 2 divisors, whose sum is σ = 55740440. Its totient is φ = 55740438.

The previous prime is 55740413. The next prime is 55740469. The reversal of 55740439 is 93404755.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55740439 - 2¹⁹ = 55216151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55740398 and 55740407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55740409) 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, 27870219 + 27870220.

It is an arithmetic number, because the mean of its divisors is an integer number (27870220).

Almost surely, 2^55740439 is an apocalyptic number.

55740439 is a deficient number, since it is larger than the sum of its proper divisors (1).

55740439 is an equidigital number, since it uses as much as digits as its factorization.

55740439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 55740439 is about 7465.9519821654. The cubic root of 55740439 is about 381.9942229328.

The spelling of 55740439 in words is "fifty-five million, seven hundred forty thousand, four hundred thirty-nine".