2155200105 has 32 divisors (see below), whose sum is σ = 3571983360. Its totient is φ = 1108325120.

The previous prime is 2155200083. The next prime is 2155200107. The reversal of 2155200105 is 5010025512.

2155200105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2155200105 - 2²⁴ = 2138422889 is a prime.

It is a super-2 number, since 2×2155200105² = 9289774985184022050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2155200107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 372535 + ... + 378275.

It is an arithmetic number, because the mean of its divisors is an integer number (111624480).

Almost surely, 2^2155200105 is an apocalyptic number.

It is an amenable number.

2155200105 is a deficient number, since it is larger than the sum of its proper divisors (1416783255).

2155200105 is a wasteful number, since it uses less digits than its factorization.

2155200105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6641.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 2155200105 is about 46424.1327867307. The cubic root of 2155200105 is about 1291.7025983113.

Adding to 2155200105 its reverse (5010025512), we get a palindrome (7165225617).

The spelling of 2155200105 in words is "two billion, one hundred fifty-five million, two hundred thousand, one hundred five".