2154105453 has 4 divisors (see below), whose sum is σ = 2872140608. Its totient is φ = 1436070300.

The previous prime is 2154105451. The next prime is 2154105461. The reversal of 2154105453 is 3545014512.

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 not a de Polignac number, because 2154105453 - 2¹ = 2154105451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2154105453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154105451) 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, 359017573 + ... + 359017578.

It is an arithmetic number, because the mean of its divisors is an integer number (718035152).

Almost surely, 2^2154105453 is an apocalyptic number.

It is an amenable number.

2154105453 is a deficient number, since it is larger than the sum of its proper divisors (718035155).

2154105453 is an equidigital number, since it uses as much as digits as its factorization.

2154105453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718035154.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 2154105453 is about 46412.3416022075. The cubic root of 2154105453 is about 1291.4838708582.

Adding to 2154105453 its reverse (3545014512), we get a palindrome (5699119965).

The spelling of 2154105453 in words is "two billion, one hundred fifty-four million, one hundred five thousand, four hundred fifty-three".