55545243121125 has 24 divisors (see below), whose sum is σ = 100129558268376. Its totient is φ = 29624129664000.

The previous prime is 55545243121099. The next prime is 55545243121169. The reversal of 55545243121125 is 52112134254555.

55545243121125 is a `hidden beast` number, since 5 + 5 + 5 + 4 + 524 + 3 + 1 + 2 + 112 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 670083039396 + 54875160081729 = 818586^2 + 7407777^2 .

It is not a de Polignac number, because 55545243121125 - 2⁶ = 55545243121061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24686773596 + ... + 24686775845.

It is an arithmetic number, because the mean of its divisors is an integer number (4172064927849).

Almost surely, 2^{55545243121125} is an apocalyptic number.

It is an amenable number.

55545243121125 is a deficient number, since it is larger than the sum of its proper divisors (44584315147251).

55545243121125 is a wasteful number, since it uses less digits than its factorization.

55545243121125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49373549462 (or 49373549449 counting only the distinct ones).

The product of its digits is 1200000, while the sum is 45.

The spelling of 55545243121125 in words is "fifty-five trillion, five hundred forty-five billion, two hundred forty-three million, one hundred twenty-one thousand, one hundred twenty-five".