2155003 has 2 divisors, whose sum is σ = 2155004. Its totient is φ = 2155002.

The previous prime is 2154979. The next prime is 2155007. The reversal of 2155003 is 3005512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2155003 - 2⁹ = 2154491 is a prime.

It is not a weakly prime, because it can be changed into another prime (2155007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077501 + 1077502.

It is an arithmetic number, because the mean of its divisors is an integer number (1077502).

2^2155003 is an apocalyptic number.

2155003 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155003 is an equidigital number, since it uses as much as digits as its factorization.

2155003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 2155003 is about 1467.9928473940. The cubic root of 2155003 is about 129.1663219323.

The spelling of 2155003 in words is "two million, one hundred fifty-five thousand, three".