4221451655 has 8 divisors (see below), whose sum is σ = 5067643392. Its totient is φ = 3375893728.

The previous prime is 4221451609. The next prime is 4221451667. The reversal of 4221451655 is 5561541224.

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 4221451655 - 2¹⁰ = 4221450631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143672 + ... + 170541.

It is an arithmetic number, because the mean of its divisors is an integer number (633455424).

Almost surely, 2^4221451655 is an apocalyptic number.

4221451655 is a deficient number, since it is larger than the sum of its proper divisors (846191737).

4221451655 is a wasteful number, since it uses less digits than its factorization.

4221451655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316905.

The product of its digits is 48000, while the sum is 35.

The square root of 4221451655 is about 64972.6993051697. The cubic root of 4221451655 is about 1616.1708647665.

Adding to 4221451655 its reverse (5561541224), we get a palindrome (9782992879).

The spelling of 4221451655 in words is "four billion, two hundred twenty-one million, four hundred fifty-one thousand, six hundred fifty-five".