221254255 has 8 divisors (see below), whose sum is σ = 265866912. Its totient is φ = 176762208.

The previous prime is 221254249. The next prime is 221254283. The reversal of 221254255 is 552452122.

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

It is a cyclic number.

It is not a de Polignac number, because 221254255 - 2¹³ = 221246063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26064 + ... + 33493.

It is an arithmetic number, because the mean of its divisors is an integer number (33233364).

Almost surely, 2^221254255 is an apocalyptic number.

221254255 is a deficient number, since it is larger than the sum of its proper divisors (44612657).

221254255 is an equidigital number, since it uses as much as digits as its factorization.

221254255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60305.

The product of its digits is 8000, while the sum is 28.

The square root of 221254255 is about 14874.6178102162. The cubic root of 221254255 is about 604.8261276643.

The spelling of 221254255 in words is "two hundred twenty-one million, two hundred fifty-four thousand, two hundred fifty-five".