55455100 has 36 divisors (see below), whose sum is σ = 122323768. Its totient is φ = 21816000.

The previous prime is 55455067. The next prime is 55455121. The reversal of 55455100 is 155455.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1555 + ... + 10645.

Almost surely, 2^55455100 is an apocalyptic number.

55455100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55455100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61161884).

55455100 is an abundant number, since it is smaller than the sum of its proper divisors (66868668).

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

55455100 is a wasteful number, since it uses less digits than its factorization.

55455100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9166 (or 9159 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 55455100 is about 7446.8181124558. The cubic root of 55455100 is about 381.3412896145.

It can be divided in two parts, 55455 and 100, that added together give a palindrome (55555).

The spelling of 55455100 in words is "fifty-five million, four hundred fifty-five thousand, one hundred".