55871850 has 48 divisors (see below), whose sum is σ = 142321248. Its totient is φ = 14495040.

The previous prime is 55871831. The next prime is 55871873. The reversal of 55871850 is 5817855.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 55871799 and 55871808.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 517 + ... + 10583.

It is an arithmetic number, because the mean of its divisors is an integer number (2965026).

Almost surely, 2^55871850 is an apocalyptic number.

55871850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55871850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71160624).

55871850 is an abundant number, since it is smaller than the sum of its proper divisors (86449398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55871850 is a wasteful number, since it uses less digits than its factorization.

55871850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10119 (or 10114 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 39.

The square root of 55871850 is about 7474.7474873737. The cubic root of 55871850 is about 382.2941777890.

The spelling of 55871850 in words is "fifty-five million, eight hundred seventy-one thousand, eight hundred fifty".