55368587 has 2 divisors, whose sum is σ = 55368588.
Its totient is φ = 55368586.
The previous prime is 55368583. The next prime is 55368589. The reversal of 55368587 is 78586355.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 55368587 - 22 = 55368583 is a prime.
Together with 55368589, it forms a pair of twin primes.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (55368583) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27684293 + 27684294.
It is an arithmetic number, because the mean of its divisors is an integer number (27684294).
Almost surely, 255368587 is an apocalyptic number.
55368587 is a deficient number, since it is larger than the sum of its proper divisors (1).
55368587 is an equidigital number, since it uses as much as digits as its factorization.
55368587 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 1008000, while the sum is 47.
The square root of 55368587 is about 7441.0071226952.
The cubic root of 55368587 is about 381.1428819551.
It can be divided in two parts, 55368 and 587, that added together give a palindrome (55955).
The spelling of 55368587 in words is "fifty-five million, three hundred sixty-eight thousand, five hundred eighty-seven".