2551268 has 6 divisors (see below), whose sum is σ = 4464726. Its totient is φ = 1275632.

The previous prime is 2551249. The next prime is 2551273. The reversal of 2551268 is 8621552.

It can be written as a sum of positive squares in only one way, i.e., 2427364 + 123904 = 1558^2 + 352^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2551268.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 318905 + ... + 318912.

It is an arithmetic number, because the mean of its divisors is an integer number (744121).

2^2551268 is an apocalyptic number.

It is an amenable number.

2551268 is a deficient number, since it is larger than the sum of its proper divisors (1913458).

2551268 is a wasteful number, since it uses less digits than its factorization.

2551268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637821 (or 637819 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 2551268 is about 1597.2689191241. The cubic root of 2551268 is about 136.6423619943.

The spelling of 2551268 in words is "two million, five hundred fifty-one thousand, two hundred sixty-eight".