2551140 has 36 divisors (see below), whose sum is σ = 7739004. Its totient is φ = 680256.

The previous prime is 2551127. The next prime is 2551169. The reversal of 2551140 is 411552.

It can be written as a sum of positive squares in 2 ways, for example, as 1617984 + 933156 = 1272^2 + 966^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6907 + ... + 7266.

2^2551140 is an apocalyptic number.

2551140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2551140 is an abundant number, since it is smaller than the sum of its proper divisors (5187864).

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

2551140 is a wasteful number, since it uses less digits than its factorization.

2551140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14188 (or 14183 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 2551140 is about 1597.2288502278. The cubic root of 2551140 is about 136.6400767888.

Adding to 2551140 its reverse (411552), we get a palindrome (2962692).

The spelling of 2551140 in words is "two million, five hundred fifty-one thousand, one hundred forty".