55050420 has 96 divisors (see below), whose sum is σ = 168569856. Its totient is φ = 13363200.

The previous prime is 55050419. The next prime is 55050491. The reversal of 55050420 is 2405055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30750 + ... + 32490.

It is an arithmetic number, because the mean of its divisors is an integer number (1755936).

Almost surely, 2^55050420 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 55050420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84284928).

55050420 is an abundant number, since it is smaller than the sum of its proper divisors (113519436).

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

55050420 is a wasteful number, since it uses less digits than its factorization.

55050420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801 (or 1799 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 55050420 is about 7419.5970240977. The cubic root of 55050420 is about 380.4114195915.

Adding to 55050420 its reverse (2405055), we get a palindrome (57455475).

The spelling of 55050420 in words is "fifty-five million, fifty thousand, four hundred twenty".