53455216520503 has 16 divisors (see below), whose sum is σ = 61159227552000. Its totient is φ = 45768100536000.

The previous prime is 53455216520437. The next prime is 53455216520507. The reversal of 53455216520503 is 30502561255435.

It is not a de Polignac number, because 53455216520503 - 2¹³ = 53455216512311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53455216520507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91461403 + ... + 92044003.

It is an arithmetic number, because the mean of its divisors is an integer number (3822451722000).

Almost surely, 2^{53455216520503} is an apocalyptic number.

53455216520503 is a deficient number, since it is larger than the sum of its proper divisors (7704011031497).

53455216520503 is a wasteful number, since it uses less digits than its factorization.

53455216520503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597078.

The product of its (nonzero) digits is 2700000, while the sum is 46.

Adding to 53455216520503 its reverse (30502561255435), we get a palindrome (83957777775938).

The spelling of 53455216520503 in words is "fifty-three trillion, four hundred fifty-five billion, two hundred sixteen million, five hundred twenty thousand, five hundred three".