55380529 has 2 divisors, whose sum is σ = 55380530. Its totient is φ = 55380528.

The previous prime is 55380511. The next prime is 55380551. The reversal of 55380529 is 92508355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54420129 + 960400 = 7377^2 + 980^2 .

It is a cyclic number.

It is not a de Polignac number, because 55380529 - 2²⁵ = 21826097 is a prime.

It is not a weakly prime, because it can be changed into another prime (55380569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27690264 + 27690265.

It is an arithmetic number, because the mean of its divisors is an integer number (27690265).

Almost surely, 2^55380529 is an apocalyptic number.

It is an amenable number.

55380529 is a deficient number, since it is larger than the sum of its proper divisors (1).

55380529 is an equidigital number, since it uses as much as digits as its factorization.

55380529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 55380529 is about 7441.8095245713. The cubic root of 55380529 is about 381.1702818543.

The spelling of 55380529 in words is "fifty-five million, three hundred eighty thousand, five hundred twenty-nine".