55440217125 has 160 divisors (see below), whose sum is σ = 109432477440. Its totient is φ = 27878256000.

The previous prime is 55440217121. The next prime is 55440217153. The reversal of 55440217125 is 52171204455.

55440217125 is a `hidden beast` number, since 5 + 544 + 0 + 21 + 71 + 25 = 666.

55440217125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55440217125 - 2² = 55440217121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55440217125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55440217121) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 12623680 + ... + 12628070.

It is an arithmetic number, because the mean of its divisors is an integer number (683952984).

Almost surely, 2^55440217125 is an apocalyptic number.

It is an amenable number.

55440217125 is a deficient number, since it is larger than the sum of its proper divisors (53992260315).

55440217125 is a wasteful number, since it uses less digits than its factorization.

55440217125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4490 (or 4471 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The spelling of 55440217125 in words is "fifty-five billion, four hundred forty million, two hundred seventeen thousand, one hundred twenty-five".