55403700 has 144 divisors (see below), whose sum is σ = 177655296. Its totient is φ = 13219200.

The previous prime is 55403687. The next prime is 55403701. The reversal of 55403700 is 730455.

55403700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55403701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 339819 + ... + 339981.

Almost surely, 2^55403700 is an apocalyptic number.

55403700 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 55403700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88827648).

55403700 is an abundant number, since it is smaller than the sum of its proper divisors (122251596).

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

55403700 is a wasteful number, since it uses less digits than its factorization.

55403700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 55403700 is about 7443.3661739834. The cubic root of 55403700 is about 381.2234345012.

The spelling of 55403700 in words is "fifty-five million, four hundred three thousand, seven hundred".