55499422087 has 2 divisors, whose sum is σ = 55499422088. Its totient is φ = 55499422086.

The previous prime is 55499422063. The next prime is 55499422117. The reversal of 55499422087 is 78022499455.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55499422087 - 2³¹ = 53351938439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55499422387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27749711043 + 27749711044.

It is an arithmetic number, because the mean of its divisors is an integer number (27749711044).

Almost surely, 2^55499422087 is an apocalyptic number.

55499422087 is a deficient number, since it is larger than the sum of its proper divisors (1).

55499422087 is an equidigital number, since it uses as much as digits as its factorization.

55499422087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 55499422087 in words is "fifty-five billion, four hundred ninety-nine million, four hundred twenty-two thousand, eighty-seven".