55278836 has 12 divisors (see below), whose sum is σ = 96826212. Its totient is φ = 27614208.

The previous prime is 55278833. The next prime is 55278887. The reversal of 55278836 is 63887255.

It can be written as a sum of positive squares in 2 ways, for example, as 18748900 + 36529936 = 4330^2 + 6044^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55278833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845 + ... + 10548.

It is an arithmetic number, because the mean of its divisors is an integer number (8068851).

Almost surely, 2^55278836 is an apocalyptic number.

It is an amenable number.

55278836 is a deficient number, since it is larger than the sum of its proper divisors (41547376).

55278836 is a wasteful number, since it uses less digits than its factorization.

55278836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12610 (or 12608 counting only the distinct ones).

The product of its digits is 403200, while the sum is 44.

The square root of 55278836 is about 7434.9738399002. The cubic root of 55278836 is about 380.9368297709.

The spelling of 55278836 in words is "fifty-five million, two hundred seventy-eight thousand, eight hundred thirty-six".