55040871 has 8 divisors (see below), whose sum is σ = 74772720. Its totient is φ = 36001472.

The previous prime is 55040773. The next prime is 55040879. The reversal of 55040871 is 17804055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55040871 - 2⁷ = 55040743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55040879) 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, 172926 + ... + 173243.

It is an arithmetic number, because the mean of its divisors is an integer number (9346590).

Almost surely, 2^55040871 is an apocalyptic number.

55040871 is a deficient number, since it is larger than the sum of its proper divisors (19731849).

55040871 is a wasteful number, since it uses less digits than its factorization.

55040871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346225.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 55040871 is about 7418.9534976302. The cubic root of 55040871 is about 380.3894230369.

The spelling of 55040871 in words is "fifty-five million, forty thousand, eight hundred seventy-one".