2153455445 has 8 divisors (see below), whose sum is σ = 2586026040. Its totient is φ = 1721511360.

The previous prime is 2153455439. The next prime is 2153455471. The reversal of 2153455445 is 5445543512.

It can be written as a sum of positive squares in 4 ways, for example, as 647549809 + 1505905636 = 25447^2 + 38806^2 .

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

It is not a de Polignac number, because 2153455445 - 2²⁰ = 2152406869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2153455399 and 2153455408.

It is a congruent number.

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, 149030 + ... + 162839.

It is an arithmetic number, because the mean of its divisors is an integer number (323253255).

Almost surely, 2^2153455445 is an apocalyptic number.

It is an amenable number.

2153455445 is a deficient number, since it is larger than the sum of its proper divisors (432570595).

2153455445 is a wasteful number, since it uses less digits than its factorization.

2153455445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313255.

The product of its digits is 240000, while the sum is 38.

The square root of 2153455445 is about 46405.3385398706. The cubic root of 2153455445 is about 1291.3539547022.

Adding to 2153455445 its reverse (5445543512), we get a palindrome (7598998957).

The spelling of 2153455445 in words is "two billion, one hundred fifty-three million, four hundred fifty-five thousand, four hundred forty-five".