55929186557 has 2 divisors, whose sum is σ = 55929186558. Its totient is φ = 55929186556.

The previous prime is 55929186553. The next prime is 55929186629. The reversal of 55929186557 is 75568192955.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28335325561 + 27593860996 = 168331^2 + 166114^2 .

It is a cyclic number.

It is not a de Polignac number, because 55929186557 - 2² = 55929186553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55929186557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55929186553) 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, 27964593278 + 27964593279.

It is an arithmetic number, because the mean of its divisors is an integer number (27964593279).

Almost surely, 2^55929186557 is an apocalyptic number.

It is an amenable number.

55929186557 is a deficient number, since it is larger than the sum of its proper divisors (1).

55929186557 is an equidigital number, since it uses as much as digits as its factorization.

55929186557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020000, while the sum is 62.

The spelling of 55929186557 in words is "fifty-five billion, nine hundred twenty-nine million, one hundred eighty-six thousand, five hundred fifty-seven".