55607999 has 2 divisors, whose sum is σ = 55608000. Its totient is φ = 55607998.

The previous prime is 55607989. The next prime is 55608011. The reversal of 55607999 is 99970655.

55607999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55607999 - 2²⁴ = 38830783 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55607989) 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, 27803999 + 27804000.

It is an arithmetic number, because the mean of its divisors is an integer number (27804000).

Almost surely, 2^55607999 is an apocalyptic number.

55607999 is a deficient number, since it is larger than the sum of its proper divisors (1).

55607999 is an equidigital number, since it uses as much as digits as its factorization.

55607999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 765450, while the sum is 50.

The square root of 55607999 is about 7457.0771083582. The cubic root of 55607999 is about 381.6914419399.

The spelling of 55607999 in words is "fifty-five million, six hundred seven thousand, nine hundred ninety-nine".