53165663 has 4 divisors (see below), whose sum is σ = 53763120. Its totient is φ = 52568208.

The previous prime is 53165617. The next prime is 53165677. The reversal of 53165663 is 36656135.

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

It is a cyclic number.

It is not a de Polignac number, because 53165663 - 2⁶ = 53165599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53165863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298595 + ... + 298772.

It is an arithmetic number, because the mean of its divisors is an integer number (13440780).

Almost surely, 2^53165663 is an apocalyptic number.

53165663 is a deficient number, since it is larger than the sum of its proper divisors (597457).

53165663 is an equidigital number, since it uses as much as digits as its factorization.

53165663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597456.

The product of its digits is 48600, while the sum is 35.

The square root of 53165663 is about 7291.4787937702. The cubic root of 53165663 is about 376.0195378975.

The spelling of 53165663 in words is "fifty-three million, one hundred sixty-five thousand, six hundred sixty-three".