2561552060 has 12 divisors (see below), whose sum is σ = 5379259368. Its totient is φ = 1024620816.

The previous prime is 2561552057. The next prime is 2561552101. The reversal of 2561552060 is 602551652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64038782 + ... + 64038821.

It is an arithmetic number, because the mean of its divisors is an integer number (448271614).

Almost surely, 2^2561552060 is an apocalyptic number.

2561552060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2561552060 is an abundant number, since it is smaller than the sum of its proper divisors (2817707308).

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

2561552060 is a wasteful number, since it uses less digits than its factorization.

2561552060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128077612 (or 128077610 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 2561552060 is about 50611.7778782765. Note that the first 3 decimals coincide. The cubic root of 2561552060 is about 1368.2571582894.

The spelling of 2561552060 in words is "two billion, five hundred sixty-one million, five hundred fifty-two thousand, sixty".