55549950 has 48 divisors (see below), whose sum is σ = 141501360. Its totient is φ = 14411520.

The previous prime is 55549943. The next prime is 55549951. The reversal of 55549950 is 5994555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55549951) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 546 + ... + 10554.

It is an arithmetic number, because the mean of its divisors is an integer number (2947945).

Almost surely, 2^55549950 is an apocalyptic number.

55549950 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 55549950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70750680).

55549950 is an abundant number, since it is smaller than the sum of its proper divisors (85951410).

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

55549950 is a wasteful number, since it uses less digits than its factorization.

55549950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10061 (or 10056 counting only the distinct ones).

The product of its (nonzero) digits is 202500, while the sum is 42.

The square root of 55549950 is about 7453.1838834152. The cubic root of 55549950 is about 381.5585802342.

It can be divided in two parts, 555 and 49950, that added together give a palindrome (50505).

The spelling of 55549950 in words is "fifty-five million, five hundred forty-nine thousand, nine hundred fifty".