55663000 has 32 divisors (see below), whose sum is σ = 130253760. Its totient is φ = 22264800.

The previous prime is 55662961. The next prime is 55663021. The reversal of 55663000 is 36655.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26832 + ... + 28831.

It is an arithmetic number, because the mean of its divisors is an integer number (4070430).

Almost surely, 2^55663000 is an apocalyptic number.

55663000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55663000 is an abundant number, since it is smaller than the sum of its proper divisors (74590760).

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

55663000 is a wasteful number, since it uses less digits than its factorization.

55663000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55684 (or 55670 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 55663000 is about 7460.7640359416. The cubic root of 55663000 is about 381.8172421471.

Adding to 55663000 its reverse (36655), we get a palindrome (55699655).

The spelling of 55663000 in words is "fifty-five million, six hundred sixty-three thousand".