2551384 has 32 divisors (see below), whose sum is σ = 5299200. Its totient is φ = 1141920.

The previous prime is 2551369. The next prime is 2551397. The reversal of 2551384 is 4831552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6769 + ... + 7135.

It is an arithmetic number, because the mean of its divisors is an integer number (165600).

2^2551384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2551384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2649600).

2551384 is an abundant number, since it is smaller than the sum of its proper divisors (2747816).

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

2551384 is a wasteful number, since it uses less digits than its factorization.

2551384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 459 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 2551384 is about 1597.3052306932. The cubic root of 2551384 is about 136.6444328957.

The spelling of 2551384 in words is "two million, five hundred fifty-one thousand, three hundred eighty-four".