55546780 has 12 divisors (see below), whose sum is σ = 116648280. Its totient is φ = 22218704.

The previous prime is 55546741. The next prime is 55546801. The reversal of 55546780 is 8764555.

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, 1388650 + ... + 1388689.

It is an arithmetic number, because the mean of its divisors is an integer number (9720690).

Almost surely, 2^55546780 is an apocalyptic number.

It is an amenable number.

55546780 is an abundant number, since it is smaller than the sum of its proper divisors (61101500).

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

55546780 is a wasteful number, since it uses less digits than its factorization.

55546780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777348 (or 2777346 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 55546780 is about 7452.9712195875. The cubic root of 55546780 is about 381.5513221196.

The spelling of 55546780 in words is "fifty-five million, five hundred forty-six thousand, seven hundred eighty".