53455863 has 4 divisors (see below), whose sum is σ = 71274488. Its totient is φ = 35637240.

The previous prime is 53455819. The next prime is 53455879. The reversal of 53455863 is 36855435.

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

It is not a de Polignac number, because 53455863 - 2¹⁶ = 53390327 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 (53455163) by changing a digit.

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, 8909308 + ... + 8909313.

It is an arithmetic number, because the mean of its divisors is an integer number (17818622).

Almost surely, 2^53455863 is an apocalyptic number.

53455863 is a deficient number, since it is larger than the sum of its proper divisors (17818625).

53455863 is a wasteful number, since it uses less digits than its factorization.

53455863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17818624.

The product of its digits is 216000, while the sum is 39.

The square root of 53455863 is about 7311.3516534222. The cubic root of 53455863 is about 376.7024531570.

The spelling of 53455863 in words is "fifty-three million, four hundred fifty-five thousand, eight hundred sixty-three".