200221455 has 16 divisors (see below), whose sum is σ = 366119424. Its totient is φ = 91529760.

The previous prime is 200221447. The next prime is 200221493. The reversal of 200221455 is 554122002.

It is a happy number.

It is not a de Polignac number, because 200221455 - 2³ = 200221447 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 953331 + ... + 953540.

It is an arithmetic number, because the mean of its divisors is an integer number (22882464).

Almost surely, 2^200221455 is an apocalyptic number.

200221455 is a deficient number, since it is larger than the sum of its proper divisors (165897969).

200221455 is a wasteful number, since it uses less digits than its factorization.

200221455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906886.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 200221455 is about 14149.9630741568. The cubic root of 200221455 is about 585.0193141406.

Adding to 200221455 its reverse (554122002), we get a palindrome (754343457).

The spelling of 200221455 in words is "two hundred million, two hundred twenty-one thousand, four hundred fifty-five".