221230526 has 8 divisors (see below), whose sum is σ = 362013624. Its totient is φ = 100559320.

The previous prime is 221230481. The next prime is 221230543. The reversal of 221230526 is 625032122.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5027945 + ... + 5027988.

It is an arithmetic number, because the mean of its divisors is an integer number (45251703).

Almost surely, 2^221230526 is an apocalyptic number.

221230526 is a deficient number, since it is larger than the sum of its proper divisors (140783098).

221230526 is a wasteful number, since it uses less digits than its factorization.

221230526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10055946.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 221230526 is about 14873.8201548896. The cubic root of 221230526 is about 604.8045048299.

Adding to 221230526 its reverse (625032122), we get a palindrome (846262648).

The spelling of 221230526 in words is "two hundred twenty-one million, two hundred thirty thousand, five hundred twenty-six".