55078144 has 36 divisors (see below), whose sum is σ = 119941920. Its totient is φ = 25034240.

The previous prime is 55078109. The next prime is 55078151. The reversal of 55078144 is 44187055.

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, 6964 + ... + 12595.

It is an arithmetic number, because the mean of its divisors is an integer number (3331720).

Almost surely, 2^55078144 is an apocalyptic number.

It is an amenable number.

55078144 is an abundant number, since it is smaller than the sum of its proper divisors (64863776).

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

55078144 is a wasteful number, since it uses less digits than its factorization.

55078144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19586 (or 19572 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 55078144 is about 7421.4650844695. The cubic root of 55078144 is about 380.4752686729.

The spelling of 55078144 in words is "fifty-five million, seventy-eight thousand, one hundred forty-four".