55727700 has 216 divisors, whose sum is σ = 199487232. Its totient is φ = 11934720.

The previous prime is 55727681. The next prime is 55727729. The reversal of 55727700 is 772755.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 249789 + ... + 250011.

It is an arithmetic number, because the mean of its divisors is an integer number (923552).

Almost surely, 2^55727700 is an apocalyptic number.

55727700 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 55727700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99743616).

55727700 is an abundant number, since it is smaller than the sum of its proper divisors (143759532).

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

55727700 is a wasteful number, since it uses less digits than its factorization.

55727700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 17150, while the sum is 33.

The square root of 55727700 is about 7465.0987937200. The cubic root of 55727700 is about 381.9651202128.

The spelling of 55727700 in words is "fifty-five million, seven hundred twenty-seven thousand, seven hundred".