2151003 has 4 divisors (see below), whose sum is σ = 2868008. Its totient is φ = 1434000.

The previous prime is 2151001. The next prime is 2151007. The reversal of 2151003 is 3001512.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2151003 - 2¹ = 2151001 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2151003.

It is not an unprimeable number, because it can be changed into a prime (2151001) 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, 358498 + ... + 358503.

It is an arithmetic number, because the mean of its divisors is an integer number (717002).

2^2151003 is an apocalyptic number.

2151003 is a deficient number, since it is larger than the sum of its proper divisors (717005).

2151003 is an equidigital number, since it uses as much as digits as its factorization.

2151003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717004.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 2151003 is about 1466.6298101430. The cubic root of 2151003 is about 129.0863552553.

Adding to 2151003 its reverse (3001512), we get a palindrome (5152515).

The spelling of 2151003 in words is "two million, one hundred fifty-one thousand, three".