55122648 has 96 divisors (see below), whose sum is σ = 168811200. Its totient is φ = 14914368.

The previous prime is 55122647. The next prime is 55122659. The reversal of 55122648 is 84622155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55122647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21111 + ... + 23577.

It is an arithmetic number, because the mean of its divisors is an integer number (1758450).

Almost surely, 2^55122648 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 55122648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84405600).

55122648 is an abundant number, since it is smaller than the sum of its proper divisors (113688552).

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

55122648 is a wasteful number, since it uses less digits than its factorization.

55122648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509 (or 2498 counting only the distinct ones).

The product of its digits is 19200, while the sum is 33.

The square root of 55122648 is about 7424.4628088502. The cubic root of 55122648 is about 380.5777177362.

The spelling of 55122648 in words is "fifty-five million, one hundred twenty-two thousand, six hundred forty-eight".