2655561520 has 40 divisors (see below), whose sum is σ = 6197014080. Its totient is φ = 1058296320.

The previous prime is 2655561499. The next prime is 2655561541. The reversal of 2655561520 is 251655562.

It is an interprime number because it is at equal distance from previous prime (2655561499) and next prime (2655561541).

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 2655561520.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39565 + ... + 82924.

It is an arithmetic number, because the mean of its divisors is an integer number (154925352).

Almost surely, 2^2655561520 is an apocalyptic number.

2655561520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2655561520 is an abundant number, since it is smaller than the sum of its proper divisors (3541452560).

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

2655561520 is a wasteful number, since it uses less digits than its factorization.

2655561520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122773 (or 122767 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 2655561520 is about 51532.1406502777. The cubic root of 2655561520 is about 1384.7949007069.

The spelling of 2655561520 in words is "two billion, six hundred fifty-five million, five hundred sixty-one thousand, five hundred twenty".