55278948 has 12 divisors (see below), whose sum is σ = 128984240. Its totient is φ = 18426312.

The previous prime is 55278943. The next prime is 55278989. The reversal of 55278948 is 84987255.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 55278897 and 55278906.

It is not an unprimeable number, because it can be changed into a prime (55278941) 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, 2303278 + ... + 2303301.

Almost surely, 2^55278948 is an apocalyptic number.

It is an amenable number.

55278948 is an abundant number, since it is smaller than the sum of its proper divisors (73705292).

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

55278948 is a wasteful number, since it uses less digits than its factorization.

55278948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4606586 (or 4606584 counting only the distinct ones).

The product of its digits is 806400, while the sum is 48.

The square root of 55278948 is about 7434.9813718664. The cubic root of 55278948 is about 380.9370870418.

The spelling of 55278948 in words is "fifty-five million, two hundred seventy-eight thousand, nine hundred forty-eight".