55558424729 has 2 divisors, whose sum is σ = 55558424730. Its totient is φ = 55558424728.

The previous prime is 55558424699. The next prime is 55558424741. The reversal of 55558424729 is 92742485555.

55558424729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36740072329 + 18818352400 = 191677^2 + 137180^2 .

It is a cyclic number.

It is not a de Polignac number, because 55558424729 - 2²⁰ = 55557376153 is a prime.

It is not a weakly prime, because it can be changed into another prime (55558424749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27779212364 + 27779212365.

It is an arithmetic number, because the mean of its divisors is an integer number (27779212365).

Almost surely, 2^55558424729 is an apocalyptic number.

It is an amenable number.

55558424729 is a deficient number, since it is larger than the sum of its proper divisors (1).

55558424729 is an equidigital number, since it uses as much as digits as its factorization.

55558424729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160000, while the sum is 56.

The spelling of 55558424729 in words is "fifty-five billion, five hundred fifty-eight million, four hundred twenty-four thousand, seven hundred twenty-nine".