2143155453 has 4 divisors (see below), whose sum is σ = 2857540608. Its totient is φ = 1428770300.

The previous prime is 2143155449. The next prime is 2143155463. The reversal of 2143155453 is 3545513412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2143155453 - 2² = 2143155449 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143155463) 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, 357192573 + ... + 357192578.

It is an arithmetic number, because the mean of its divisors is an integer number (714385152).

Almost surely, 2^2143155453 is an apocalyptic number.

It is an amenable number.

2143155453 is a deficient number, since it is larger than the sum of its proper divisors (714385155).

2143155453 is an equidigital number, since it uses as much as digits as its factorization.

2143155453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714385154.

The product of its digits is 36000, while the sum is 33.

The square root of 2143155453 is about 46294.2269943024. The cubic root of 2143155453 is about 1289.2918118768.

Adding to 2143155453 its reverse (3545513412), we get a palindrome (5688668865).

The spelling of 2143155453 in words is "two billion, one hundred forty-three million, one hundred fifty-five thousand, four hundred fifty-three".