55208587 has 8 divisors (see below), whose sum is σ = 63180000. Its totient is φ = 47258304.

The previous prime is 55208581. The next prime is 55208611. The reversal of 55208587 is 78580255.

55208587 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55208587 - 2¹⁵ = 55175819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55208581) 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 in 7 ways as a sum of consecutive naturals, for example, 789 + ... + 10537.

It is an arithmetic number, because the mean of its divisors is an integer number (7897500).

Almost surely, 2^55208587 is an apocalyptic number.

55208587 is a deficient number, since it is larger than the sum of its proper divisors (7971413).

55208587 is an equidigital number, since it uses as much as digits as its factorization.

55208587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10565.

The product of its (nonzero) digits is 112000, while the sum is 40.

The square root of 55208587 is about 7430.2481116043. The cubic root of 55208587 is about 380.7753950211.

The spelling of 55208587 in words is "fifty-five million, two hundred eight thousand, five hundred eighty-seven".