2155200104 has 32 divisors (see below), whose sum is σ = 4176157440. Its totient is φ = 1042723440.

The previous prime is 2155200083. The next prime is 2155200107. The reversal of 2155200104 is 4010025512.

It is a super-2 number, since 2×2155200104² = 9289774976563221632, 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 7 ways as a sum of consecutive naturals, for example, 233807 + ... + 242849.

It is an arithmetic number, because the mean of its divisors is an integer number (130504920).

Almost surely, 2^2155200104 is an apocalyptic number.

It is an amenable number.

2155200104 is a deficient number, since it is larger than the sum of its proper divisors (2020957336).

2155200104 is an frugal number, since it uses more digits than its factorization.

2155200104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9142 (or 9076 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2155200104 is about 46424.1327759604. The cubic root of 2155200104 is about 1291.7025981116.

Adding to 2155200104 its reverse (4010025512), we get a palindrome (6165225616).

The spelling of 2155200104 in words is "two billion, one hundred fifty-five million, two hundred thousand, one hundred four".