53505205155445 has 16 divisors (see below), whose sum is σ = 65271366548208. Its totient is φ = 42094353968640.

The previous prime is 53505205155403. The next prime is 53505205155461. The reversal of 53505205155445 is 54455150250535.

It can be written as a sum of positive squares in 8 ways, for example, as 3195946373841 + 50309258781604 = 1787721^2 + 7092902^2 .

It is not a de Polignac number, because 53505205155445 - 2¹⁹ = 53505204631157 is a prime.

It is a super-2 number, since 2×53505205155445² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 15292624 + ... + 18462793.

It is an arithmetic number, because the mean of its divisors is an integer number (4079460409263).

Almost surely, 2^{53505205155445} is an apocalyptic number.

It is an amenable number.

53505205155445 is a deficient number, since it is larger than the sum of its proper divisors (11766161392763).

53505205155445 is a wasteful number, since it uses less digits than its factorization.

53505205155445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33760680.

The product of its (nonzero) digits is 7500000, while the sum is 49.

The spelling of 53505205155445 in words is "fifty-three trillion, five hundred five billion, two hundred five million, one hundred fifty-five thousand, four hundred forty-five".