55448558 has 16 divisors (see below), whose sum is σ = 91401264. Its totient is φ = 25018560.

The previous prime is 55448507. The next prime is 55448563. The reversal of 55448558 is 85584455.

It is a Curzon number.

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, 6185 + ... + 12212.

It is an arithmetic number, because the mean of its divisors is an integer number (5712579).

Almost surely, 2^55448558 is an apocalyptic number.

55448558 is a deficient number, since it is larger than the sum of its proper divisors (35952706).

55448558 is a wasteful number, since it uses less digits than its factorization.

55448558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18547.

The product of its digits is 640000, while the sum is 44.

The square root of 55448558 is about 7446.3788514955. The cubic root of 55448558 is about 381.3262935016.

The spelling of 55448558 in words is "fifty-five million, four hundred forty-eight thousand, five hundred fifty-eight".