2551011552 has 72 divisors (see below), whose sum is σ = 7267786344. Its totient is φ = 848772864.

The previous prime is 2551011523. The next prime is 2551011553. The reversal of 2551011552 is 2551101552.

2551011552 is a `hidden beast` number, since 2 + 5 + 5 + 101 + 1 + 552 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551011553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154278 + ... + 170010.

It is an arithmetic number, because the mean of its divisors is an integer number (100941477).

Almost surely, 2^2551011552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2551011552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3633893172).

2551011552 is an abundant number, since it is smaller than the sum of its proper divisors (4716774792).

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

2551011552 is a wasteful number, since it uses less digits than its factorization.

2551011552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16312 (or 16301 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

The square root of 2551011552 is about 50507.5395559910. The cubic root of 2551011552 is about 1366.3778350826.

Subtracting 2551011552 from its reverse (2551101552), we obtain a square (90000 = 300²).

The spelling of 2551011552 in words is "two billion, five hundred fifty-one million, eleven thousand, five hundred fifty-two".