55041420 has 96 divisors (see below), whose sum is σ = 182246400. Its totient is φ = 12144384.

The previous prime is 55041409. The next prime is 55041439. The reversal of 55041420 is 2414055.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 9921 + ... + 14439.

It is an arithmetic number, because the mean of its divisors is an integer number (1898400).

Almost surely, 2^55041420 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 55041420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91123200).

55041420 is an abundant number, since it is smaller than the sum of its proper divisors (127204980).

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

55041420 is a wasteful number, since it uses less digits than its factorization.

55041420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4567 (or 4565 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 55041420 is about 7418.9904973655. The cubic root of 55041420 is about 380.3906877523.

Adding to 55041420 its reverse (2414055), we get a palindrome (57455475).

The spelling of 55041420 in words is "fifty-five million, forty-one thousand, four hundred twenty".