2165257533 has 8 divisors (see below), whose sum is σ = 2887780896. Its totient is φ = 1443119600.

The previous prime is 2165257481. The next prime is 2165257541. The reversal of 2165257533 is 3357525612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2165257533 - 2⁶ = 2165257469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2165257491 and 2165257500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165257333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82983 + ... + 105908.

It is an arithmetic number, because the mean of its divisors is an integer number (360972612).

Almost surely, 2^2165257533 is an apocalyptic number.

It is an amenable number.

2165257533 is a deficient number, since it is larger than the sum of its proper divisors (722523363).

2165257533 is a wasteful number, since it uses less digits than its factorization.

2165257533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192715.

The product of its digits is 189000, while the sum is 39.

The square root of 2165257533 is about 46532.3278270065. The cubic root of 2165257533 is about 1293.7087615878.

The spelling of 2165257533 in words is "two billion, one hundred sixty-five million, two hundred fifty-seven thousand, five hundred thirty-three".