55307700 has 108 divisors (see below), whose sum is σ = 198147040. Its totient is φ = 12640320.

The previous prime is 55307699. The next prime is 55307723. The reversal of 55307700 is 770355.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1911 + ... + 10689.

Almost surely, 2^55307700 is an apocalyptic number.

55307700 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 55307700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99073520).

55307700 is an abundant number, since it is smaller than the sum of its proper divisors (142839340).

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

55307700 is a wasteful number, since it uses less digits than its factorization.

55307700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8806 (or 8796 counting only the distinct ones).

The product of its (nonzero) digits is 3675, while the sum is 27.

The square root of 55307700 is about 7436.9146828507. The cubic root of 55307700 is about 381.0031206473.

The spelling of 55307700 in words is "fifty-five million, three hundred seven thousand, seven hundred".