55183855 has 4 divisors (see below), whose sum is σ = 66220632. Its totient is φ = 44147080.

The previous prime is 55183841. The next prime is 55183861. The reversal of 55183855 is 55838155.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55183855 - 2⁷ = 55183727 is a prime.

It is a super-3 number, since 3×55183855³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5518381 + ... + 5518390.

It is an arithmetic number, because the mean of its divisors is an integer number (16555158).

Almost surely, 2^55183855 is an apocalyptic number.

55183855 is a deficient number, since it is larger than the sum of its proper divisors (11036777).

55183855 is a wasteful number, since it uses less digits than its factorization.

55183855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11036776.

The product of its digits is 120000, while the sum is 40.

The square root of 55183855 is about 7428.5836469680. The cubic root of 55183855 is about 380.7185273961.

The spelling of 55183855 in words is "fifty-five million, one hundred eighty-three thousand, eight hundred fifty-five".