54655639 has 2 divisors, whose sum is σ = 54655640. Its totient is φ = 54655638.

The previous prime is 54655637. The next prime is 54655661. The reversal of 54655639 is 93655645.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54655639 - 2¹ = 54655637 is a prime.

Together with 54655637, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 54655595 and 54655604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54655631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27327819 + 27327820.

It is an arithmetic number, because the mean of its divisors is an integer number (27327820).

Almost surely, 2^54655639 is an apocalyptic number.

54655639 is a deficient number, since it is larger than the sum of its proper divisors (1).

54655639 is an equidigital number, since it uses as much as digits as its factorization.

54655639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 486000, while the sum is 43.

The square root of 54655639 is about 7392.9452182469. The cubic root of 54655639 is about 379.4998938228.

The spelling of 54655639 in words is "fifty-four million, six hundred fifty-five thousand, six hundred thirty-nine".