55555106249 has 2 divisors, whose sum is σ = 55555106250. Its totient is φ = 55555106248.

The previous prime is 55555106237. The next prime is 55555106273. The reversal of 55555106249 is 94260155555.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41192761600 + 14362344649 = 202960^2 + 119843^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55555106249 is a prime.

It is not a weakly prime, because it can be changed into another prime (55555106219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27777553124 + 27777553125.

It is an arithmetic number, because the mean of its divisors is an integer number (27777553125).

Almost surely, 2^55555106249 is an apocalyptic number.

It is an amenable number.

55555106249 is a deficient number, since it is larger than the sum of its proper divisors (1).

55555106249 is an equidigital number, since it uses as much as digits as its factorization.

55555106249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350000, while the sum is 47.

The spelling of 55555106249 in words is "fifty-five billion, five hundred fifty-five million, one hundred six thousand, two hundred forty-nine".