2551020120 has 96 divisors (see below), whose sum is σ = 9044539920. Its totient is φ = 618428160.

The previous prime is 2551020097. The next prime is 2551020127. The reversal of 2551020120 is 210201552.

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

It is a junction number, because it is equal to n+sod(n) for n = 2551020093 and 2551020102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551020127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 318139 + ... + 326058.

Almost surely, 2^2551020120 is an apocalyptic number.

2551020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2551020120 is an abundant number, since it is smaller than the sum of its proper divisors (6493519800).

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

2551020120 is a wasteful number, since it uses less digits than its factorization.

2551020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644225 (or 644218 counting only the distinct ones).

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

The square root of 2551020120 is about 50507.6243749397. The cubic root of 2551020120 is about 1366.3793648173.

Adding to 2551020120 its reverse (210201552), we get a palindrome (2761221672).

The spelling of 2551020120 in words is "two billion, five hundred fifty-one million, twenty thousand, one hundred twenty".