55644700 has 36 divisors (see below), whose sum is σ = 123039000. Its totient is φ = 21835840.

The previous prime is 55644683. The next prime is 55644713. The reversal of 55644700 is 744655.

It is a happy number.

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, 51 + ... + 10549.

It is an arithmetic number, because the mean of its divisors is an integer number (3417750).

Almost surely, 2^55644700 is an apocalyptic number.

55644700 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 55644700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61519500).

55644700 is an abundant number, since it is smaller than the sum of its proper divisors (67394300).

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

55644700 is a wasteful number, since it uses less digits than its factorization.

55644700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10566 (or 10559 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 55644700 is about 7459.5375191764. The cubic root of 55644700 is about 381.7753949512.

The spelling of 55644700 in words is "fifty-five million, six hundred forty-four thousand, seven hundred".