2153903 has 2 divisors, whose sum is σ = 2153904. Its totient is φ = 2153902.

The previous prime is 2153891. The next prime is 2153909. The reversal of 2153903 is 3093512.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2153903 - 2⁴ = 2153887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2153909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076951 + 1076952.

It is an arithmetic number, because the mean of its divisors is an integer number (1076952).

2^2153903 is an apocalyptic number.

2153903 is a deficient number, since it is larger than the sum of its proper divisors (1).

2153903 is an equidigital number, since it uses as much as digits as its factorization.

2153903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 2153903 is about 1467.6181383453. The cubic root of 2153903 is about 129.1443409673.

The spelling of 2153903 in words is "two million, one hundred fifty-three thousand, nine hundred three".