55511125445 has 4 divisors (see below), whose sum is σ = 66613350540. Its totient is φ = 44408900352.

The previous prime is 55511125339. The next prime is 55511125471. The reversal of 55511125445 is 54452111555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41688655684 + 13822469761 = 204178^2 + 117569^2 .

It is a cyclic number.

It is not a de Polignac number, because 55511125445 - 2¹⁸ = 55510863301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55511125399 and 55511125408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5551112540 + ... + 5551112549.

It is an arithmetic number, because the mean of its divisors is an integer number (16653337635).

Almost surely, 2^55511125445 is an apocalyptic number.

It is an amenable number.

55511125445 is a deficient number, since it is larger than the sum of its proper divisors (11102225095).

55511125445 is a wasteful number, since it uses less digits than its factorization.

55511125445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11102225094.

The product of its digits is 100000, while the sum is 38.

The spelling of 55511125445 in words is "fifty-five billion, five hundred eleven million, one hundred twenty-five thousand, four hundred forty-five".