2551023220 has 24 divisors (see below), whose sum is σ = 5639104800. Its totient is φ = 966703392.

The previous prime is 2551023199. The next prime is 2551023221. The reversal of 2551023220 is 223201552.

It is a junction number, because it is equal to n+sod(n) for n = 2551023191 and 2551023200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551023221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3356230 + ... + 3356989.

It is an arithmetic number, because the mean of its divisors is an integer number (234962700).

Almost surely, 2^2551023220 is an apocalyptic number.

2551023220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2551023220 is an abundant number, since it is smaller than the sum of its proper divisors (3088081580).

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

2551023220 is a wasteful number, since it uses less digits than its factorization.

2551023220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6713247 (or 6713245 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 2551023220 is about 50507.6550633664. The cubic root of 2551023220 is about 1366.3799182918.

Adding to 2551023220 its reverse (223201552), we get a palindrome (2774224772).

The spelling of 2551023220 in words is "two billion, five hundred fifty-one million, twenty-three thousand, two hundred twenty".