55066320 has 60 divisors (see below), whose sum is σ = 184933476. Its totient is φ = 14684160.

The previous prime is 55066303. The next prime is 55066339. The reversal of 55066320 is 2366055.

It can be written as a sum of positive squares in 2 ways, for example, as 6290064 + 48776256 = 2508^2 + 6984^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37521 + ... + 38960.

Almost surely, 2^55066320 is an apocalyptic number.

It is an amenable number.

55066320 is an abundant number, since it is smaller than the sum of its proper divisors (129867156).

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

55066320 is a wasteful number, since it uses less digits than its factorization.

55066320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76500 (or 76491 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 55066320 is about 7420.6684335038. The cubic root of 55066320 is about 380.4480403193.

The spelling of 55066320 in words is "fifty-five million, sixty-six thousand, three hundred twenty".