221554414 has 8 divisors (see below), whose sum is σ = 335437848. Its totient is φ = 109741800.

The previous prime is 221554373. The next prime is 221554429. The reversal of 221554414 is 414455122.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517437 + ... + 517864.

It is an arithmetic number, because the mean of its divisors is an integer number (41929731).

Almost surely, 2^221554414 is an apocalyptic number.

221554414 is a deficient number, since it is larger than the sum of its proper divisors (113883434).

221554414 is a wasteful number, since it uses less digits than its factorization.

221554414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035410.

The product of its digits is 6400, while the sum is 28.

The square root of 221554414 is about 14884.7040279611. The cubic root of 221554414 is about 605.0995114413.

It can be divided in two parts, 22155 and 4414, that added together give a square (26569 = 163²).

The spelling of 221554414 in words is "two hundred twenty-one million, five hundred fifty-four thousand, four hundred fourteen".