2155905152 has 32 divisors (see below), whose sum is σ = 4311745020. Its totient is φ = 1073741824.

The previous prime is 2155905119. The next prime is 2155905179. The reversal of 2155905152 is 2515095512.

It can be written as a sum of positive squares in 2 ways, for example, as 1220524096 + 935381056 = 34936^2 + 30584^2 .

It is a tau number, because it is divible by the number of its divisors (32).

2155905152 is an undulating number in base 16.

It is an unprimeable number.

In principle, a polygon with 2155905152 sides can be constructed with ruler and compass.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128 + ... + 65664.

Almost surely, 2^2155905152 is an apocalyptic number.

It is an amenable number.

2155905152 is a deficient number, since it is larger than the sum of its proper divisors (2155839868).

2155905152 is an equidigital number, since it uses as much as digits as its factorization.

2155905152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65808 (or 65796 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 35.

The square root of 2155905152 is about 46431.7257055992. The cubic root of 2155905152 is about 1291.8434377858.

The spelling of 2155905152 in words is "two billion, one hundred fifty-five million, nine hundred five thousand, one hundred fifty-two".