117563221 has 4 divisors (see below), whose sum is σ = 117794700. Its totient is φ = 117331744.

The previous prime is 117563219. The next prime is 117563227. The reversal of 117563221 is 122365711.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74200996 + 43362225 = 8614^2 + 6585^2 .

It is a cyclic number.

It is not a de Polignac number, because 117563221 - 2¹ = 117563219 is a prime.

It is a super-2 number, since 2×117563221² = 27642221863789682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117563221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117563227) 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, 114976 + ... + 115993.

It is an arithmetic number, because the mean of its divisors is an integer number (29448675).

Almost surely, 2^117563221 is an apocalyptic number.

It is an amenable number.

117563221 is a deficient number, since it is larger than the sum of its proper divisors (231479).

117563221 is an equidigital number, since it uses as much as digits as its factorization.

117563221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231478.

The product of its digits is 2520, while the sum is 28.

The square root of 117563221 is about 10842.6574694583. The cubic root of 117563221 is about 489.8808831655.

The spelling of 117563221 in words is "one hundred seventeen million, five hundred sixty-three thousand, two hundred twenty-one".