2153523365 has 64 divisors (see below), whose sum is σ = 3339325440. Its totient is φ = 1297658880.

The previous prime is 2153523353. The next prime is 2153523367. The reversal of 2153523365 is 5633253512.

It is not a de Polignac number, because 2153523365 - 2⁶ = 2153523301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153523367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 801314 + ... + 803996.

It is an arithmetic number, because the mean of its divisors is an integer number (52176960).

Almost surely, 2^2153523365 is an apocalyptic number.

It is an amenable number.

2153523365 is a deficient number, since it is larger than the sum of its proper divisors (1185802075).

2153523365 is a wasteful number, since it uses less digits than its factorization.

2153523365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802.

The product of its digits is 81000, while the sum is 35.

The square root of 2153523365 is about 46406.0703464536. The cubic root of 2153523365 is about 1291.3675309971.

Adding to 2153523365 its reverse (5633253512), we get a palindrome (7786776877).

The spelling of 2153523365 in words is "two billion, one hundred fifty-three million, five hundred twenty-three thousand, three hundred sixty-five".