2165256053 has 4 divisors (see below), whose sum is σ = 2167795308. Its totient is φ = 2162716800.

The previous prime is 2165256031. The next prime is 2165256059. The reversal of 2165256053 is 3506525612.

2165256053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58629649 + 2106626404 = 7657^2 + 45898^2 .

It is a cyclic number.

It is not a de Polignac number, because 2165256053 - 2²⁴ = 2148478837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165256059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1268348 + ... + 1270053.

It is an arithmetic number, because the mean of its divisors is an integer number (541948827).

Almost surely, 2^2165256053 is an apocalyptic number.

It is an amenable number.

2165256053 is a deficient number, since it is larger than the sum of its proper divisors (2539255).

2165256053 is an equidigital number, since it uses as much as digits as its factorization.

2165256053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539254.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 2165256053 is about 46532.3119240813. The cubic root of 2165256053 is about 1293.7084668285.

The spelling of 2165256053 in words is "two billion, one hundred sixty-five million, two hundred fifty-six thousand, fifty-three".