55549287 has 8 divisors (see below), whose sum is σ = 82295280. Its totient is φ = 37032840.

The previous prime is 55549279. The next prime is 55549313. The reversal of 55549287 is 78294555.

55549287 is a `hidden beast` number, since 5 + 554 + 92 + 8 + 7 = 666.

It is not a de Polignac number, because 55549287 - 2³ = 55549279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55549237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1028664 + ... + 1028717.

It is an arithmetic number, because the mean of its divisors is an integer number (10286910).

Almost surely, 2^55549287 is an apocalyptic number.

55549287 is a deficient number, since it is larger than the sum of its proper divisors (26745993).

55549287 is a wasteful number, since it uses less digits than its factorization.

55549287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057390 (or 2057384 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 55549287 is about 7453.1394056465. The cubic root of 55549287 is about 381.5570622350.

It can be divided in two parts, 5554 and 9287, that added together give a palindrome (14841).

The spelling of 55549287 in words is "fifty-five million, five hundred forty-nine thousand, two hundred eighty-seven".