2551408 has 10 divisors (see below), whose sum is σ = 4943384. Its totient is φ = 1275696.

The previous prime is 2551403. The next prime is 2551421. The reversal of 2551408 is 8041552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79716 + ... + 79747.

2^2551408 is an apocalyptic number.

It is an amenable number.

2551408 is a deficient number, since it is larger than the sum of its proper divisors (2391976).

2551408 is a wasteful number, since it uses less digits than its factorization.

2551408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159471 (or 159465 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 2551408 is about 1597.3127433286. The cubic root of 2551408 is about 136.6448613503.

The spelling of 2551408 in words is "two million, five hundred fifty-one thousand, four hundred eight".