2551322140 has 24 divisors (see below), whose sum is σ = 5360171040. Its totient is φ = 1020072768.

The previous prime is 2551322117. The next prime is 2551322153. The reversal of 2551322140 is 412231552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19321 + ... + 73999.

It is an arithmetic number, because the mean of its divisors is an integer number (223340460).

Almost surely, 2^2551322140 is an apocalyptic number.

2551322140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2551322140 is an abundant number, since it is smaller than the sum of its proper divisors (2808848900).

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

2551322140 is a wasteful number, since it uses less digits than its factorization.

2551322140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57021 (or 57019 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2551322140 is about 50510.6141320812. The cubic root of 2551322140 is about 1366.4332854179.

Adding to 2551322140 its reverse (412231552), we get a palindrome (2963553692).

The spelling of 2551322140 in words is "two billion, five hundred fifty-one million, three hundred twenty-two thousand, one hundred forty".