55284516 has 72 divisors (see below), whose sum is σ = 161790720. Its totient is φ = 15590016.

The previous prime is 55284511. The next prime is 55284517. The reversal of 55284516 is 61548255.

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 (55284511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18520 + ... + 21296.

Almost surely, 2^55284516 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 55284516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80895360).

55284516 is an abundant number, since it is smaller than the sum of its proper divisors (106506204).

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

55284516 is a wasteful number, since it uses less digits than its factorization.

55284516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873 (or 2868 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 55284516 is about 7435.3558085676. The cubic root of 55284516 is about 380.9498766393.

The spelling of 55284516 in words is "fifty-five million, two hundred eighty-four thousand, five hundred sixteen".