55227560 has 64 divisors (see below), whose sum is σ = 132509520. Its totient is φ = 20643840.

The previous prime is 55227559. The next prime is 55227581. The reversal of 55227560 is 6572255.

It can be written as a sum of positive squares in 8 ways, for example, as 32512804 + 22714756 = 5702^2 + 4766^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163712 + ... + 164048.

Almost surely, 2^55227560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55227560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66254760).

55227560 is an abundant number, since it is smaller than the sum of its proper divisors (77281960).

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

55227560 is a wasteful number, since it uses less digits than its factorization.

55227560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 55227560 is about 7431.5247426083. The cubic root of 55227560 is about 380.8190091551.

The spelling of 55227560 in words is "fifty-five million, two hundred twenty-seven thousand, five hundred sixty".