56955553 has 2 divisors, whose sum is σ = 56955554. Its totient is φ = 56955552.

The previous prime is 56955551. The next prime is 56955557. The reversal of 56955553 is 35555965.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55532304 + 1423249 = 7452^2 + 1193^2 .

It is a cyclic number.

It is not a de Polignac number, because 56955553 - 2¹ = 56955551 is a prime.

Together with 56955551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56955551) 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, 28477776 + 28477777.

It is an arithmetic number, because the mean of its divisors is an integer number (28477777).

Almost surely, 2^56955553 is an apocalyptic number.

It is an amenable number.

56955553 is a deficient number, since it is larger than the sum of its proper divisors (1).

56955553 is an equidigital number, since it uses as much as digits as its factorization.

56955553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 506250, while the sum is 43.

The square root of 56955553 is about 7546.8902867340. The cubic root of 56955553 is about 384.7500553440.

The spelling of 56955553 in words is "fifty-six million, nine hundred fifty-five thousand, five hundred fifty-three".