55849553 has 2 divisors, whose sum is σ = 55849554. Its totient is φ = 55849552.

The previous prime is 55849499. The next prime is 55849559. The reversal of 55849553 is 35594855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55830784 + 18769 = 7472^2 + 137^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55849553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55849559) 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, 27924776 + 27924777.

It is an arithmetic number, because the mean of its divisors is an integer number (27924777).

Almost surely, 2^55849553 is an apocalyptic number.

It is an amenable number.

55849553 is a deficient number, since it is larger than the sum of its proper divisors (1).

55849553 is an equidigital number, since it uses as much as digits as its factorization.

55849553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540000, while the sum is 44.

The square root of 55849553 is about 7473.2558500295. The cubic root of 55849553 is about 382.2433164731.

The spelling of 55849553 in words is "fifty-five million, eight hundred forty-nine thousand, five hundred fifty-three".