55865700 has 324 divisors, whose sum is σ = 210108080. Its totient is φ = 12830400.

The previous prime is 55865699. The next prime is 55865701. The reversal of 55865700 is 756855.

55865700 is a `hidden beast` number, since 5 + 5 + 86 + 570 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (55865699) and next prime (55865701).

It is a tau number, because it is divible by the number of its divisors (324).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (55865701) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 2940291 + ... + 2940309.

Almost surely, 2^55865700 is an apocalyptic number.

55865700 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 55865700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105054040).

55865700 is an abundant number, since it is smaller than the sum of its proper divisors (154242380).

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

55865700 is a wasteful number, since it uses less digits than its factorization.

55865700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 55865700 is about 7474.3360909180. The cubic root of 55865700 is about 382.2801504779.

It can be divided in two parts, 55865 and 700, that added together give a palindrome (56565).

The spelling of 55865700 in words is "fifty-five million, eight hundred sixty-five thousand, seven hundred".