55430563 has 4 divisors (see below), whose sum is σ = 55464040. Its totient is φ = 55397088.

The previous prime is 55430549. The next prime is 55430567. The reversal of 55430563 is 36503455.

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 55430563 - 2⁹ = 55430051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55430567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14118 + ... + 17611.

It is an arithmetic number, because the mean of its divisors is an integer number (13866010).

Almost surely, 2^55430563 is an apocalyptic number.

55430563 is a deficient number, since it is larger than the sum of its proper divisors (33477).

55430563 is a wasteful number, since it uses less digits than its factorization.

55430563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33476.

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 55430563 is about 7445.1704480153. The cubic root of 55430563 is about 381.2850377903.

The spelling of 55430563 in words is "fifty-five million, four hundred thirty thousand, five hundred sixty-three".