2154255105 has 32 divisors (see below), whose sum is σ = 3528774144. Its totient is φ = 1121734656.

The previous prime is 2154255097. The next prime is 2154255109. The reversal of 2154255105 is 5015524512.

It is not a de Polignac number, because 2154255105 - 2³ = 2154255097 is a prime.

It is a super-2 number, since 2×2154255105² = 9281630114837122050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2154255109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 301737 + ... + 308793.

It is an arithmetic number, because the mean of its divisors is an integer number (110274192).

Almost surely, 2^2154255105 is an apocalyptic number.

It is an amenable number.

2154255105 is a deficient number, since it is larger than the sum of its proper divisors (1374519039).

2154255105 is a wasteful number, since it uses less digits than its factorization.

2154255105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7545.

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 2154255105 is about 46413.9537747001. The cubic root of 2154255105 is about 1291.5137778850.

Adding to 2154255105 its reverse (5015524512), we get a palindrome (7169779617).

The spelling of 2154255105 in words is "two billion, one hundred fifty-four million, two hundred fifty-five thousand, one hundred five".