55278006 has 16 divisors (see below), whose sum is σ = 126349824. Its totient is φ = 15793704.

The previous prime is 55277987. The next prime is 55278023. The reversal of 55278006 is 60087255.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658030 + ... + 658113.

It is an arithmetic number, because the mean of its divisors is an integer number (7896864).

Almost surely, 2^55278006 is an apocalyptic number.

55278006 is an abundant number, since it is smaller than the sum of its proper divisors (71071818).

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

55278006 is a wasteful number, since it uses less digits than its factorization.

55278006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316155.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 55278006 is about 7434.9180224129. The cubic root of 55278006 is about 380.9349231995.

Subtracting 55278006 from its reverse (60087255), we obtain a square (4809249 = 2193²).

The spelling of 55278006 in words is "fifty-five million, two hundred seventy-eight thousand, six".