2172501803 has 2 divisors, whose sum is σ = 2172501804. Its totient is φ = 2172501802.

The previous prime is 2172501739. The next prime is 2172501829. The reversal of 2172501803 is 3081052712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2172501803 - 2⁶ = 2172501739 is a prime.

It is not a weakly prime, because it can be changed into another prime (2172501833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086250901 + 1086250902.

It is an arithmetic number, because the mean of its divisors is an integer number (1086250902).

Almost surely, 2^2172501803 is an apocalyptic number.

2172501803 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172501803 is an equidigital number, since it uses as much as digits as its factorization.

2172501803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 2172501803 is about 46610.1040869896. The cubic root of 2172501803 is about 1295.1499362777.

The spelling of 2172501803 in words is "two billion, one hundred seventy-two million, five hundred one thousand, eight hundred three".