55619871 has 8 divisors (see below), whose sum is σ = 75098880. Its totient is φ = 36610392.

The previous prime is 55619857. The next prime is 55619881. The reversal of 55619871 is 17891655.

55619871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 55619871 - 2⁶ = 55619807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55619881) 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 7 ways as a sum of consecutive naturals, for example, 117105 + ... + 117578.

It is an arithmetic number, because the mean of its divisors is an integer number (9387360).

Almost surely, 2^55619871 is an apocalyptic number.

55619871 is a deficient number, since it is larger than the sum of its proper divisors (19479009).

55619871 is a wasteful number, since it uses less digits than its factorization.

55619871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234765.

The product of its digits is 75600, while the sum is 42.

The square root of 55619871 is about 7457.8730882203. The cubic root of 55619871 is about 381.7186030105.

The spelling of 55619871 in words is "fifty-five million, six hundred nineteen thousand, eight hundred seventy-one".