2551420020 has 96 divisors (see below), whose sum is σ = 7218118656. Its totient is φ = 673360000.

The previous prime is 2551420009. The next prime is 2551420021. The reversal of 2551420020 is 200241552.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551420021) 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 31 ways as a sum of consecutive naturals, for example, 2876017 + ... + 2876903.

It is an arithmetic number, because the mean of its divisors is an integer number (75188736).

Almost surely, 2^2551420020 is an apocalyptic number.

2551420020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2551420020 is an abundant number, since it is smaller than the sum of its proper divisors (4666698636).

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

2551420020 is a wasteful number, since it uses less digits than its factorization.

2551420020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341 (or 1339 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 2551420020 is about 50511.5830280541. The cubic root of 2551420020 is about 1366.4507593356.

Adding to 2551420020 its reverse (200241552), we get a palindrome (2751661572).

The spelling of 2551420020 in words is "two billion, five hundred fifty-one million, four hundred twenty thousand, twenty".