55284558 has 16 divisors (see below), whose sum is σ = 126364800. Its totient is φ = 15795576.

The previous prime is 55284553. The next prime is 55284577. The reversal of 55284558 is 85548255.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1316299 = 55284558 / (5 + 5 + 2 + 8 + 4 + 5 + 5 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55284553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658108 + ... + 658191.

It is an arithmetic number, because the mean of its divisors is an integer number (7897800).

Almost surely, 2^55284558 is an apocalyptic number.

55284558 is an abundant number, since it is smaller than the sum of its proper divisors (71080242).

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

55284558 is a wasteful number, since it uses less digits than its factorization.

55284558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316311.

The product of its digits is 320000, while the sum is 42.

The square root of 55284558 is about 7435.3586329107. The cubic root of 55284558 is about 380.9499731093.

The spelling of 55284558 in words is "fifty-five million, two hundred eighty-four thousand, five hundred fifty-eight".