55845487 has 2 divisors, whose sum is σ = 55845488. Its totient is φ = 55845486.

The previous prime is 55845451. The next prime is 55845497. The reversal of 55845487 is 78454855.

55845487 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 is a cyclic number.

It is not a de Polignac number, because 55845487 - 2⁷ = 55845359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55845437) 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, 27922743 + 27922744.

It is an arithmetic number, because the mean of its divisors is an integer number (27922744).

Almost surely, 2^55845487 is an apocalyptic number.

55845487 is a deficient number, since it is larger than the sum of its proper divisors (1).

55845487 is an equidigital number, since it uses as much as digits as its factorization.

55845487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 896000, while the sum is 46.

The square root of 55845487 is about 7472.9838083593. The cubic root of 55845487 is about 382.2340401288.

The spelling of 55845487 in words is "fifty-five million, eight hundred forty-five thousand, four hundred eighty-seven".