2155104503 has 4 divisors (see below), whose sum is σ = 2155372728. Its totient is φ = 2154836280.

The previous prime is 2155104493. The next prime is 2155104527. The reversal of 2155104503 is 3054015512.

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 2155104503 - 2¹⁴ = 2155088119 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 (2155104533) 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, 121676 + ... + 138257.

It is an arithmetic number, because the mean of its divisors is an integer number (538843182).

Almost surely, 2^2155104503 is an apocalyptic number.

2155104503 is a deficient number, since it is larger than the sum of its proper divisors (268225).

2155104503 is an equidigital number, since it uses as much as digits as its factorization.

2155104503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268224.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 2155104503 is about 46423.1031168749. The cubic root of 2155104503 is about 1291.6834985879.

The spelling of 2155104503 in words is "two billion, one hundred fifty-five million, one hundred four thousand, five hundred three".