2154255321 has 16 divisors (see below), whose sum is σ = 3073087040. Its totient is φ = 1338275520.

The previous prime is 2154255319. The next prime is 2154255347. The reversal of 2154255321 is 1235524512.

It is not a de Polignac number, because 2154255321 - 2¹ = 2154255319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154255421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306310 + ... + 313263.

It is an arithmetic number, because the mean of its divisors is an integer number (192067940).

Almost surely, 2^2154255321 is an apocalyptic number.

It is an amenable number.

2154255321 is a deficient number, since it is larger than the sum of its proper divisors (918831719).

2154255321 is a wasteful number, since it uses less digits than its factorization.

2154255321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619656.

The product of its digits is 12000, while the sum is 30.

The square root of 2154255321 is about 46413.9561015865. The cubic root of 2154255321 is about 1291.5138210503.

Adding to 2154255321 its reverse (1235524512), we get a palindrome (3389779833).

The spelling of 2154255321 in words is "two billion, one hundred fifty-four million, two hundred fifty-five thousand, three hundred twenty-one".