2500045 has 4 divisors (see below), whose sum is σ = 3000060. Its totient is φ = 2000032.

The previous prime is 2500027. The next prime is 2500049. The reversal of 2500045 is 5400052.

It is a happy number.

2500045 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 866761 + 1633284 = 931^2 + 1278^2 .

It is a cyclic number.

It is not a de Polignac number, because 2500045 - 2¹⁵ = 2467277 is a prime.

2500045 is a modest number, since divided by 45 gives 25 as remainder.

2500045 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500049) 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, 250000 + ... + 250009.

It is an arithmetic number, because the mean of its divisors is an integer number (750015).

2^2500045 is an apocalyptic number.

It is an amenable number.

2500045 is a deficient number, since it is larger than the sum of its proper divisors (500015).

2500045 is an equidigital number, since it uses as much as digits as its factorization.

2500045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500014.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 2500045 is about 1581.1530602696. The cubic root of 2500045 is about 135.7216951501.

Adding to 2500045 its reverse (5400052), we get a palindrome (7900097).

The spelling of 2500045 in words is "two million, five hundred thousand, forty-five".