2551312 has 10 divisors (see below), whose sum is σ = 4943198. Its totient is φ = 1275648.

The previous prime is 2551279. The next prime is 2551313. The reversal of 2551312 is 2131552.

It can be written as a sum of positive squares in only one way, i.e., 2547216 + 4096 = 1596^2 + 64^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2551312.

It is not an unprimeable number, because it can be changed into a prime (2551313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79713 + ... + 79744.

2^2551312 is an apocalyptic number.

It is an amenable number.

2551312 is a deficient number, since it is larger than the sum of its proper divisors (2391886).

2551312 is a wasteful number, since it uses less digits than its factorization.

2551312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159465 (or 159459 counting only the distinct ones).

The product of its digits is 300, while the sum is 19.

The square root of 2551312 is about 1597.2826925751. The cubic root of 2551312 is about 136.6431475160.

Adding to 2551312 its reverse (2131552), we get a palindrome (4682864).

The spelling of 2551312 in words is "two million, five hundred fifty-one thousand, three hundred twelve".