2155650103 has 4 divisors (see below), whose sum is σ = 2156200200. Its totient is φ = 2155100008.

The previous prime is 2155650083. The next prime is 2155650139. The reversal of 2155650103 is 3010565512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2155650103 - 2⁹ = 2155649591 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 (2155650143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269128 + ... + 277021.

It is an arithmetic number, because the mean of its divisors is an integer number (539050050).

Almost surely, 2^2155650103 is an apocalyptic number.

2155650103 is a deficient number, since it is larger than the sum of its proper divisors (550097).

2155650103 is an equidigital number, since it uses as much as digits as its factorization.

2155650103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550096.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 2155650103 is about 46428.9791294187. The cubic root of 2155650103 is about 1291.7924930012.

The spelling of 2155650103 in words is "two billion, one hundred fifty-five million, six hundred fifty thousand, one hundred three".