2553145 has 24 divisors (see below), whose sum is σ = 3779784. Its totient is φ = 1645056.

The previous prime is 2553139. The next prime is 2553149. The reversal of 2553145 is 5413552.

It can be written as a sum of positive squares in 4 ways, for example, as 28224 + 2524921 = 168^2 + 1589^2 .

It is not a de Polignac number, because 2553145 - 2⁵ = 2553113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2553149) 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 in 23 ways as a sum of consecutive naturals, for example, 3859 + ... + 4471.

It is an arithmetic number, because the mean of its divisors is an integer number (157491).

2^2553145 is an apocalyptic number.

It is an amenable number.

2553145 is a deficient number, since it is larger than the sum of its proper divisors (1226639).

2553145 is a wasteful number, since it uses less digits than its factorization.

2553145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 642 counting only the distinct ones).

The product of its digits is 3000, while the sum is 25.

The square root of 2553145 is about 1597.8563765245. The cubic root of 2553145 is about 136.6758636153.

Adding to 2553145 its reverse (5413552), we get a palindrome (7966697).

The spelling of 2553145 in words is "two million, five hundred fifty-three thousand, one hundred forty-five".