55768220 has 24 divisors (see below), whose sum is σ = 117255600. Its totient is φ = 22280192.

The previous prime is 55768199. The next prime is 55768253. The reversal of 55768220 is 2286755.

It is a super-3 number, since 3×55768220³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 27191 + ... + 29169.

It is an arithmetic number, because the mean of its divisors is an integer number (4885650).

Almost surely, 2^55768220 is an apocalyptic number.

It is an amenable number.

55768220 is an abundant number, since it is smaller than the sum of its proper divisors (61487380).

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

55768220 is a wasteful number, since it uses less digits than its factorization.

55768220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3397 (or 3395 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 55768220 is about 7467.8122633071. The cubic root of 55768220 is about 382.0576742867.

The spelling of 55768220 in words is "fifty-five million, seven hundred sixty-eight thousand, two hundred twenty".