55554647 has 2 divisors, whose sum is σ = 55554648. Its totient is φ = 55554646.

The previous prime is 55554643. The next prime is 55554661. The reversal of 55554647 is 74645555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55554647 - 2² = 55554643 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55554641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27777323 + 27777324.

It is an arithmetic number, because the mean of its divisors is an integer number (27777324).

Almost surely, 2^55554647 is an apocalyptic number.

55554647 is a deficient number, since it is larger than the sum of its proper divisors (1).

55554647 is an equidigital number, since it uses as much as digits as its factorization.

55554647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 420000, while the sum is 41.

The square root of 55554647 is about 7453.4989769906. The cubic root of 55554647 is about 381.5693341001.

The spelling of 55554647 in words is "fifty-five million, five hundred fifty-four thousand, six hundred forty-seven".