2551804 has 12 divisors (see below), whose sum is σ = 4659984. Its totient is φ = 1220384.

The previous prime is 2551793. The next prime is 2551817. The reversal of 2551804 is 4081552.

It is a super-6 number, since 6×2551804⁶ (a number of 40 digits) contains 666666 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13777 + ... + 13960.

It is an arithmetic number, because the mean of its divisors is an integer number (388332).

2^2551804 is an apocalyptic number.

It is an amenable number.

2551804 is a deficient number, since it is larger than the sum of its proper divisors (2108180).

2551804 is a wasteful number, since it uses less digits than its factorization.

2551804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27764 (or 27762 counting only the distinct ones).

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

The square root of 2551804 is about 1597.4366967113. The cubic root of 2551804 is about 136.6519304621.

The spelling of 2551804 in words is "two million, five hundred fifty-one thousand, eight hundred four".