2551608 has 32 divisors (see below), whose sum is σ = 7088400. Its totient is φ = 850464.

The previous prime is 2551607. The next prime is 2551639. The reversal of 2551608 is 8061552.

2551608 is a `hidden beast` number, since 2 + 5 + 51 + 608 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551603) 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 7 ways as a sum of consecutive naturals, for example, 5691 + ... + 6122.

2^2551608 is an apocalyptic number.

It is an amenable number.

2551608 is an abundant number, since it is smaller than the sum of its proper divisors (4536792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2551608 is a wasteful number, since it uses less digits than its factorization.

2551608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11828 (or 11818 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 2551608 is about 1597.3753472494. The cubic root of 2551608 is about 136.6484317002.

The spelling of 2551608 in words is "two million, five hundred fifty-one thousand, six hundred eight".