55071550 has 12 divisors (see below), whose sum is σ = 102433176. Its totient is φ = 22028600.

The previous prime is 55071479. The next prime is 55071553. The reversal of 55071550 is 5517055.

55071550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55071553) 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 5 ways as a sum of consecutive naturals, for example, 550666 + ... + 550765.

It is an arithmetic number, because the mean of its divisors is an integer number (8536098).

Almost surely, 2^55071550 is an apocalyptic number.

55071550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55071550 is a deficient number, since it is larger than the sum of its proper divisors (47361626).

55071550 is a wasteful number, since it uses less digits than its factorization.

55071550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101443 (or 1101438 counting only the distinct ones).

The product of its (nonzero) digits is 4375, while the sum is 28.

The square root of 55071550 is about 7421.0208192674. The cubic root of 55071550 is about 380.4600844645.

The spelling of 55071550 in words is "fifty-five million, seventy-one thousand, five hundred fifty".