55850020 has 48 divisors (see below), whose sum is σ = 122266368. Its totient is φ = 21409920.

The previous prime is 55850017. The next prime is 55850021. The reversal of 55850020 is 2005855.

It is not an unprimeable number, because it can be changed into a prime (55850021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52009 + ... + 53071.

It is an arithmetic number, because the mean of its divisors is an integer number (2547216).

Almost surely, 2^55850020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55850020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61133184).

55850020 is an abundant number, since it is smaller than the sum of its proper divisors (66416348).

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

55850020 is a wasteful number, since it uses less digits than its factorization.

55850020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180 (or 1178 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 55850020 is about 7473.2870947127. The cubic root of 55850020 is about 382.2443818778.

Adding to 55850020 its reverse (2005855), we get a palindrome (57855875).

The spelling of 55850020 in words is "fifty-five million, eight hundred fifty thousand, twenty".