2551245 has 16 divisors (see below), whose sum is σ = 4103232. Its totient is φ = 1353600.

The previous prime is 2551223. The next prime is 2551247. The reversal of 2551245 is 5421552.

It is a happy number.

It is not a de Polignac number, because 2551245 - 2¹⁹ = 2026957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551247) 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, 3945 + ... + 4545.

It is an arithmetic number, because the mean of its divisors is an integer number (256452).

2^2551245 is an apocalyptic number.

It is an amenable number.

2551245 is a deficient number, since it is larger than the sum of its proper divisors (1551987).

2551245 is a wasteful number, since it uses less digits than its factorization.

2551245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892.

The product of its digits is 2000, while the sum is 24.

The square root of 2551245 is about 1597.2617193184. The cubic root of 2551245 is about 136.6419513771.

Adding to 2551245 its reverse (5421552), we get a palindrome (7972797).

The spelling of 2551245 in words is "two million, five hundred fifty-one thousand, two hundred forty-five".