221484526 has 8 divisors (see below), whose sum is σ = 346671504. Its totient is φ = 105927360.

The previous prime is 221484521. The next prime is 221484569. The reversal of 221484526 is 625484122.

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

It is a junction number, because it is equal to n+sod(n) for n = 221484491 and 221484500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221484521) 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, 2407395 + ... + 2407486.

It is an arithmetic number, because the mean of its divisors is an integer number (43333938).

Almost surely, 2^221484526 is an apocalyptic number.

221484526 is a deficient number, since it is larger than the sum of its proper divisors (125186978).

221484526 is a wasteful number, since it uses less digits than its factorization.

221484526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4814906.

The product of its digits is 30720, while the sum is 34.

The square root of 221484526 is about 14882.3561978606. The cubic root of 221484526 is about 605.0358797563.

The spelling of 221484526 in words is "two hundred twenty-one million, four hundred eighty-four thousand, five hundred twenty-six".