55288700 has 18 divisors (see below), whose sum is σ = 119976696. Its totient is φ = 22115440.

The previous prime is 55288697. The next prime is 55288721. The reversal of 55288700 is 788255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 276344 + ... + 276543.

It is an arithmetic number, because the mean of its divisors is an integer number (6665372).

Almost surely, 2^55288700 is an apocalyptic number.

55288700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55288700 is an abundant number, since it is smaller than the sum of its proper divisors (64687996).

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

55288700 is a wasteful number, since it uses less digits than its factorization.

55288700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552901 (or 552894 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 55288700 is about 7435.6371616695. The cubic root of 55288700 is about 380.9594866482.

The spelling of 55288700 in words is "fifty-five million, two hundred eighty-eight thousand, seven hundred".