55184639 has 2 divisors, whose sum is σ = 55184640. Its totient is φ = 55184638.

The previous prime is 55184621. The next prime is 55184671. The reversal of 55184639 is 93648155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55184639 - 2²⁰ = 54136063 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 55184596 and 55184605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55184699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27592319 + 27592320.

It is an arithmetic number, because the mean of its divisors is an integer number (27592320).

Almost surely, 2^55184639 is an apocalyptic number.

55184639 is a deficient number, since it is larger than the sum of its proper divisors (1).

55184639 is an equidigital number, since it uses as much as digits as its factorization.

55184639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 41.

The square root of 55184639 is about 7428.6364159245. The cubic root of 55184639 is about 380.7203303504.

The spelling of 55184639 in words is "fifty-five million, one hundred eighty-four thousand, six hundred thirty-nine".