55499684197 has 2 divisors, whose sum is σ = 55499684198. Its totient is φ = 55499684196.

The previous prime is 55499684143. The next prime is 55499684243. The reversal of 55499684197 is 79148699455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47859875361 + 7639808836 = 218769^2 + 87406^2 .

It is a cyclic number.

It is not a de Polignac number, because 55499684197 - 2⁷ = 55499684069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55499684137) 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, 27749842098 + 27749842099.

It is an arithmetic number, because the mean of its divisors is an integer number (27749842099).

Almost surely, 2^55499684197 is an apocalyptic number.

It is an amenable number.

55499684197 is a deficient number, since it is larger than the sum of its proper divisors (1).

55499684197 is an equidigital number, since it uses as much as digits as its factorization.

55499684197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97977600, while the sum is 67.

The spelling of 55499684197 in words is "fifty-five billion, four hundred ninety-nine million, six hundred eighty-four thousand, one hundred ninety-seven".