55553563 has 8 divisors (see below), whose sum is σ = 60285456. Its totient is φ = 50887200.

The previous prime is 55553521. The next prime is 55553567. The reversal of 55553563 is 36535555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55553563 - 2¹⁷ = 55422491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55553567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14608 + ... + 18013.

It is an arithmetic number, because the mean of its divisors is an integer number (7535682).

Almost surely, 2^55553563 is an apocalyptic number.

55553563 is a deficient number, since it is larger than the sum of its proper divisors (4731893).

55553563 is a wasteful number, since it uses less digits than its factorization.

55553563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32765.

The product of its digits is 168750, while the sum is 37.

The square root of 55553563 is about 7453.4262591106. The cubic root of 55553563 is about 381.5668523165.

The spelling of 55553563 in words is "fifty-five million, five hundred fifty-three thousand, five hundred sixty-three".