53955563 has 4 divisors (see below), whose sum is σ = 53976120. Its totient is φ = 53935008.

The previous prime is 53955547. The next prime is 53955589. The reversal of 53955563 is 36555935.

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 53955563 - 2⁴ = 53955547 is a prime.

It is a super-2 number, since 2×53955563² = 5822405557293938, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53955563.

It is not an unprimeable number, because it can be changed into a prime (53955163) 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, 5645 + ... + 11822.

It is an arithmetic number, because the mean of its divisors is an integer number (13494030).

Almost surely, 2^53955563 is an apocalyptic number.

53955563 is a deficient number, since it is larger than the sum of its proper divisors (20557).

53955563 is a wasteful number, since it uses less digits than its factorization.

53955563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20556.

The product of its digits is 303750, while the sum is 41.

The square root of 53955563 is about 7345.4450511865. The cubic root of 53955563 is about 377.8726066793.

The spelling of 53955563 in words is "fifty-three million, nine hundred fifty-five thousand, five hundred sixty-three".