2551548520 has 32 divisors (see below), whose sum is σ = 5745872520. Its totient is φ = 1019750400.

The previous prime is 2551548497. The next prime is 2551548523. The reversal of 2551548520 is 258451552.

It can be written as a sum of positive squares in 4 ways, for example, as 1149345604 + 1402202916 = 33902^2 + 37446^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2551548520.

It is not an unprimeable number, because it can be changed into a prime (2551548523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21484 + ... + 74596.

Almost surely, 2^2551548520 is an apocalyptic number.

2551548520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2551548520 is an abundant number, since it is smaller than the sum of its proper divisors (3194324000).

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

2551548520 is a wasteful number, since it uses less digits than its factorization.

2551548520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54325 (or 54321 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 37.

The square root of 2551548520 is about 50512.8549975152. The cubic root of 2551548520 is about 1366.4736989762.

The spelling of 2551548520 in words is "two billion, five hundred fifty-one million, five hundred forty-eight thousand, five hundred twenty".