2155033453 has 4 divisors (see below), whose sum is σ = 2155487868. Its totient is φ = 2154579040.

The previous prime is 2155033399. The next prime is 2155033481. The reversal of 2155033453 is 3543305512.

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 1944986404 + 210047049 = 44102^2 + 14493^2 .

It is a cyclic number.

It is not a de Polignac number, because 2155033453 - 2⁹ = 2155032941 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 (2155031453) 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, 220018 + ... + 229603.

It is an arithmetic number, because the mean of its divisors is an integer number (538871967).

Almost surely, 2^2155033453 is an apocalyptic number.

It is an amenable number.

2155033453 is a deficient number, since it is larger than the sum of its proper divisors (454415).

2155033453 is an equidigital number, since it uses as much as digits as its factorization.

2155033453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454414.

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 2155033453 is about 46422.3378665918. The cubic root of 2155033453 is about 1291.6693035886.

Adding to 2155033453 its reverse (3543305512), we get a palindrome (5698338965).

The spelling of 2155033453 in words is "two billion, one hundred fifty-five million, thirty-three thousand, four hundred fifty-three".