55823520 has 96 divisors (see below), whose sum is σ = 185129280. Its totient is φ = 14100480.

The previous prime is 55823489. The next prime is 55823531. The reversal of 55823520 is 2532855.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6060 + ... + 12180.

It is an arithmetic number, because the mean of its divisors is an integer number (1928430).

Almost surely, 2^55823520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55823520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92564640).

55823520 is an abundant number, since it is smaller than the sum of its proper divisors (129305760).

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

55823520 is a wasteful number, since it uses less digits than its factorization.

55823520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6158 (or 6150 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 55823520 is about 7471.5139028178. The cubic root of 55823520 is about 382.1839158975.

The spelling of 55823520 in words is "fifty-five million, eight hundred twenty-three thousand, five hundred twenty".