221474563 has 4 divisors (see below), whose sum is σ = 227460400. Its totient is φ = 215488728.

The previous prime is 221474557. The next prime is 221474647. The reversal of 221474563 is 365474122.

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 221474563 - 2¹⁷ = 221343491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221474503) 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, 2992863 + ... + 2992936.

It is an arithmetic number, because the mean of its divisors is an integer number (56865100).

Almost surely, 2^221474563 is an apocalyptic number.

221474563 is a deficient number, since it is larger than the sum of its proper divisors (5985837).

221474563 is an equidigital number, since it uses as much as digits as its factorization.

221474563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5985836.

The product of its digits is 40320, while the sum is 34.

The square root of 221474563 is about 14882.0214688731. The cubic root of 221474563 is about 605.0268075456.

The spelling of 221474563 in words is "two hundred twenty-one million, four hundred seventy-four thousand, five hundred sixty-three".