2551128 has 16 divisors (see below), whose sum is σ = 6377880. Its totient is φ = 850368.

The previous prime is 2551127. The next prime is 2551169. The reversal of 2551128 is 8211552.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 106297 = 2551128 / (2 + 5 + 5 + 1 + 1 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 2551098 and 2551107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53125 + ... + 53172.

2^2551128 is an apocalyptic number.

It is an amenable number.

2551128 is an abundant number, since it is smaller than the sum of its proper divisors (3826752).

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

2551128 is a wasteful number, since it uses less digits than its factorization.

2551128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106306 (or 106302 counting only the distinct ones).

The product of its digits is 800, while the sum is 24.

The square root of 2551128 is about 1597.2250937172. The cubic root of 2551128 is about 136.6398625469.

The spelling of 2551128 in words is "two million, five hundred fifty-one thousand, one hundred twenty-eight".