2154603 has 16 divisors (see below), whose sum is σ = 3168000. Its totient is φ = 1291680.

The previous prime is 2154587. The next prime is 2154611. The reversal of 2154603 is 3064512.

It is a happy number.

It is not a de Polignac number, because 2154603 - 2⁴ = 2154587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2154603.

It is not an unprimeable number, because it can be changed into a prime (2154643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3298 + ... + 3896.

It is an arithmetic number, because the mean of its divisors is an integer number (198000).

2^2154603 is an apocalyptic number.

2154603 is a deficient number, since it is larger than the sum of its proper divisors (1013397).

2154603 is a wasteful number, since it uses less digits than its factorization.

2154603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2154603 is about 1467.8566006256. The cubic root of 2154603 is about 129.1583297197.

Subtracting 2154603 from its reverse (3064512), we obtain a palindrome (909909).

The spelling of 2154603 in words is "two million, one hundred fifty-four thousand, six hundred three".