2153220455 has 8 divisors (see below), whose sum is σ = 2585518704. Its totient is φ = 1721473600.

The previous prime is 2153220451. The next prime is 2153220497. The reversal of 2153220455 is 5540223512.

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

It is not a de Polignac number, because 2153220455 - 2² = 2153220451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153220451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129206 + ... + 144915.

It is an arithmetic number, because the mean of its divisors is an integer number (323189838).

Almost surely, 2^2153220455 is an apocalyptic number.

2153220455 is a deficient number, since it is larger than the sum of its proper divisors (432298249).

2153220455 is a wasteful number, since it uses less digits than its factorization.

2153220455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275697.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 2153220455 is about 46402.8065422772. The cubic root of 2153220455 is about 1291.3069811579.

Adding to 2153220455 its reverse (5540223512), we get a palindrome (7693443967).

The spelling of 2153220455 in words is "two billion, one hundred fifty-three million, two hundred twenty thousand, four hundred fifty-five".