55289850 has 96 divisors (see below), whose sum is σ = 170989056. Its totient is φ = 11486400.

The previous prime is 55289849. The next prime is 55289881. The reversal of 55289850 is 5898255.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 9157 + ... + 13943.

It is an arithmetic number, because the mean of its divisors is an integer number (1781136).

Almost surely, 2^55289850 is an apocalyptic number.

55289850 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 55289850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85494528).

55289850 is an abundant number, since it is smaller than the sum of its proper divisors (115699206).

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

55289850 is a wasteful number, since it uses less digits than its factorization.

55289850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4820 (or 4815 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 42.

The square root of 55289850 is about 7435.7144915603. The cubic root of 55289850 is about 380.9621279376.

The spelling of 55289850 in words is "fifty-five million, two hundred eighty-nine thousand, eight hundred fifty".