2661525552 has 120 divisors (see below), whose sum is σ = 8021473200. Its totient is φ = 758220288.

The previous prime is 2661525521. The next prime is 2661525571. The reversal of 2661525552 is 2555251662.

It is a self number, because there is not a number n which added to its sum of digits gives 2661525552.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 913474 + ... + 916382.

It is an arithmetic number, because the mean of its divisors is an integer number (66845610).

Almost surely, 2^2661525552 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 2661525552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4010736600).

2661525552 is an abundant number, since it is smaller than the sum of its proper divisors (5359947648).

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

2661525552 is a wasteful number, since it uses less digits than its factorization.

2661525552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323 (or 3310 counting only the distinct ones).

The product of its digits is 180000, while the sum is 39.

The square root of 2661525552 is about 51589.9753052858. The cubic root of 2661525552 is about 1385.8308129368.

The spelling of 2661525552 in words is "two billion, six hundred sixty-one million, five hundred twenty-five thousand, five hundred fifty-two".