55726553 has 2 divisors, whose sum is σ = 55726554. Its totient is φ = 55726552.

The previous prime is 55726529. The next prime is 55726571. The reversal of 55726553 is 35562755.

55726553 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., 52809289 + 2917264 = 7267^2 + 1708^2 .

It is a cyclic number.

It is not a de Polignac number, because 55726553 - 2¹⁰ = 55725529 is a prime.

It is not a weakly prime, because it can be changed into another prime (55756553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27863276 + 27863277.

It is an arithmetic number, because the mean of its divisors is an integer number (27863277).

Almost surely, 2^55726553 is an apocalyptic number.

It is an amenable number.

55726553 is a deficient number, since it is larger than the sum of its proper divisors (1).

55726553 is an equidigital number, since it uses as much as digits as its factorization.

55726553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157500, while the sum is 38.

The square root of 55726553 is about 7465.0219691572. The cubic root of 55726553 is about 381.9624996310.

The spelling of 55726553 in words is "fifty-five million, seven hundred twenty-six thousand, five hundred fifty-three".