55305678 has 16 divisors (see below), whose sum is σ = 111252816. Its totient is φ = 18328320.

The previous prime is 55305661. The next prime is 55305727. The reversal of 55305678 is 87650355.

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, 25603 + ... + 27678.

It is an arithmetic number, because the mean of its divisors is an integer number (6953301).

Almost surely, 2^55305678 is an apocalyptic number.

55305678 is an abundant number, since it is smaller than the sum of its proper divisors (55947138).

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

55305678 is a wasteful number, since it uses less digits than its factorization.

55305678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53459.

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 55305678 is about 7436.7787381366. The cubic root of 55305678 is about 380.9984775464.

The spelling of 55305678 in words is "fifty-five million, three hundred five thousand, six hundred seventy-eight".