54575550 has 72 divisors (see below), whose sum is σ = 153030384. Its totient is φ = 13918080.

The previous prime is 54575519. The next prime is 54575597. The reversal of 54575550 is 5557545.

It is a happy number.

54575550 is a `hidden beast` number, since 54 + 57 + 5 + 550 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7714 + ... + 12986.

It is an arithmetic number, because the mean of its divisors is an integer number (2125422).

Almost surely, 2^54575550 is an apocalyptic number.

54575550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 54575550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76515192).

54575550 is an abundant number, since it is smaller than the sum of its proper divisors (98454834).

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

54575550 is a wasteful number, since it uses less digits than its factorization.

54575550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5314 (or 5306 counting only the distinct ones).

The product of its (nonzero) digits is 87500, while the sum is 36.

The square root of 54575550 is about 7387.5266496981. The cubic root of 54575550 is about 379.3144379676.

The spelling of 54575550 in words is "fifty-four million, five hundred seventy-five thousand, five hundred fifty".