55078 has 4 divisors (see below), whose sum is σ = 82620. Its totient is φ = 27538.
The previous prime is 55073. The next prime is 55079. The reversal of 55078 is 87055.
It is a semiprime because it is the product of two primes.
It is a plaindrome in base 15.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (55073) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13768 + ... + 13771.
It is an arithmetic number, because the mean of its divisors is an integer number (20655).
255078 is an apocalyptic number.
55078 is a deficient number, since it is larger than the sum of its proper divisors (27542).
55078 is a wasteful number, since it uses less digits than its factorization.
55078 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 27541.
The product of its (nonzero) digits is 1400, while the sum is 25.
The square root of 55078 is about 234.6870256320. The cubic root of 55078 is about 38.0474937093.
The spelling of 55078 in words is "fifty-five thousand, seventy-eight".
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