221492795 has 8 divisors (see below), whose sum is σ = 265876800. Its totient is φ = 177137280.

The previous prime is 221492773. The next prime is 221492797. The reversal of 221492795 is 597294122.

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

It is not a de Polignac number, because 221492795 - 2¹⁶ = 221427259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221492797) 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 7 ways as a sum of consecutive naturals, for example, 18131 + ... + 27779.

It is an arithmetic number, because the mean of its divisors is an integer number (33234600).

Almost surely, 2^221492795 is an apocalyptic number.

221492795 is a deficient number, since it is larger than the sum of its proper divisors (44384005).

221492795 is an equidigital number, since it uses as much as digits as its factorization.

221492795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14245.

The product of its digits is 90720, while the sum is 41.

The square root of 221492795 is about 14882.6340074598. The cubic root of 221492795 is about 605.0434092205.

The spelling of 221492795 in words is "two hundred twenty-one million, four hundred ninety-two thousand, seven hundred ninety-five".