55487699 has 2 divisors, whose sum is σ = 55487700. Its totient is φ = 55487698.

The previous prime is 55487689. The next prime is 55487713. The reversal of 55487699 is 99678455.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55487699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55487699.

It is not a weakly prime, because it can be changed into another prime (55487629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27743849 + 27743850.

It is an arithmetic number, because the mean of its divisors is an integer number (27743850).

Almost surely, 2^55487699 is an apocalyptic number.

55487699 is a deficient number, since it is larger than the sum of its proper divisors (1).

55487699 is an equidigital number, since it uses as much as digits as its factorization.

55487699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 53.

The square root of 55487699 is about 7449.0065780613. The cubic root of 55487699 is about 381.4159981601.

The spelling of 55487699 in words is "fifty-five million, four hundred eighty-seven thousand, six hundred ninety-nine".