55443100 has 18 divisors (see below), whose sum is σ = 120311744. Its totient is φ = 22177200.

The previous prime is 55443079. The next prime is 55443109. The reversal of 55443100 is 134455.

It is a super-2 number, since 2×55443100² = 6147874675220000, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55443109) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 277116 + ... + 277315.

Almost surely, 2^55443100 is an apocalyptic number.

55443100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55443100 is an abundant number, since it is smaller than the sum of its proper divisors (64868644).

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

55443100 is a wasteful number, since it uses less digits than its factorization.

55443100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554445 (or 554438 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 55443100 is about 7446.0123556169. The cubic root of 55443100 is about 381.3137813205.

Adding to 55443100 its reverse (134455), we get a palindrome (55577555).

The spelling of 55443100 in words is "fifty-five million, four hundred forty-three thousand, one hundred".