5655439 has 2 divisors, whose sum is σ = 5655440. Its totient is φ = 5655438.

The previous prime is 5655409. The next prime is 5655443. The reversal of 5655439 is 9345565.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5655439 - 2¹⁷ = 5524367 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5655398 and 5655407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5655409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2827719 + 2827720.

It is an arithmetic number, because the mean of its divisors is an integer number (2827720).

Almost surely, 2^5655439 is an apocalyptic number.

5655439 is a deficient number, since it is larger than the sum of its proper divisors (1).

5655439 is an equidigital number, since it uses as much as digits as its factorization.

5655439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81000, while the sum is 37.

The square root of 5655439 is about 2378.1166918383. The cubic root of 5655439 is about 178.1648832002.

The spelling of 5655439 in words is "five million, six hundred fifty-five thousand, four hundred thirty-nine".