55289505 has 16 divisors (see below), whose sum is σ = 88865280. Its totient is φ = 29353728.

The previous prime is 55289503. The next prime is 55289519. The reversal of 55289505 is 50598255.

55289505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55289505 - 2¹ = 55289503 is a prime.

It is a super-3 number, since 3×55289505³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (55289503) 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 15 ways as a sum of consecutive naturals, for example, 4920 + ... + 11609.

It is an arithmetic number, because the mean of its divisors is an integer number (5554080).

Almost surely, 2^55289505 is an apocalyptic number.

It is an amenable number.

55289505 is a deficient number, since it is larger than the sum of its proper divisors (33575775).

55289505 is a wasteful number, since it uses less digits than its factorization.

55289505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16760.

The product of its (nonzero) digits is 90000, while the sum is 39.

The square root of 55289505 is about 7435.6912926775. The cubic root of 55289505 is about 380.9613355546.

The spelling of 55289505 in words is "fifty-five million, two hundred eighty-nine thousand, five hundred five".