55585456057829 has 2 divisors, whose sum is σ = 55585456057830. Its totient is φ = 55585456057828.

The previous prime is 55585456057823. The next prime is 55585456057837. The reversal of 55585456057829 is 92875065458555.

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., 40485198388804 + 15100257669025 = 6362798^2 + 3885905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55585456057829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55585456057823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27792728028914 + 27792728028915.

It is an arithmetic number, because the mean of its divisors is an integer number (27792728028915).

Almost surely, 2^{55585456057829} is an apocalyptic number.

It is an amenable number.

55585456057829 is a deficient number, since it is larger than the sum of its proper divisors (1).

55585456057829 is an equidigital number, since it uses as much as digits as its factorization.

55585456057829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024000000, while the sum is 74.

The spelling of 55585456057829 in words is "fifty-five trillion, five hundred eighty-five billion, four hundred fifty-six million, fifty-seven thousand, eight hundred twenty-nine".