2503145 has 4 divisors (see below), whose sum is σ = 3003780. Its totient is φ = 2002512.

The previous prime is 2503141. The next prime is 2503147. The reversal of 2503145 is 5413052.

2503145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 595984 + 1907161 = 772^2 + 1381^2 .

It is a cyclic number.

It is not a de Polignac number, because 2503145 - 2² = 2503141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2503141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250310 + ... + 250319.

It is an arithmetic number, because the mean of its divisors is an integer number (750945).

2^2503145 is an apocalyptic number.

It is an amenable number.

2503145 is a deficient number, since it is larger than the sum of its proper divisors (500635).

2503145 is an equidigital number, since it uses as much as digits as its factorization.

2503145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500634.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 2503145 is about 1582.1330538232. The cubic root of 2503145 is about 135.7777692706. Note that the first 4 decimals are identical.

Adding to 2503145 its reverse (5413052), we get a palindrome (7916197).

The spelling of 2503145 in words is "two million, five hundred three thousand, one hundred forty-five".