127216550 has 12 divisors (see below), whose sum is σ = 236622876. Its totient is φ = 50886600.

The previous prime is 127216549. The next prime is 127216561. The reversal of 127216550 is 55612721.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1272116 + ... + 1272215.

It is an arithmetic number, because the mean of its divisors is an integer number (19718573).

Almost surely, 2^127216550 is an apocalyptic number.

127216550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

127216550 is a deficient number, since it is larger than the sum of its proper divisors (109406326).

127216550 is a wasteful number, since it uses less digits than its factorization.

127216550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544343 (or 2544338 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 127216550 is about 11279.0314300475. The cubic root of 127216550 is about 502.9381013041.

The spelling of 127216550 in words is "one hundred twenty-seven million, two hundred sixteen thousand, five hundred fifty".