5453781449 has 4 divisors (see below), whose sum is σ = 5456704464. Its totient is φ = 5450858436.

The previous prime is 5453781401. The next prime is 5453781457. The reversal of 5453781449 is 9441873545.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-5453781449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5453781397 and 5453781406.

It is not an unprimeable number, because it can be changed into a prime (5453781479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1458707 + ... + 1462440.

It is an arithmetic number, because the mean of its divisors is an integer number (1364176116).

Almost surely, 2^5453781449 is an apocalyptic number.

It is an amenable number.

5453781449 is a deficient number, since it is larger than the sum of its proper divisors (2923015).

5453781449 is a wasteful number, since it uses less digits than its factorization.

5453781449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923014.

The product of its digits is 2419200, while the sum is 50.

The square root of 5453781449 is about 73849.7220644736. The cubic root of 5453781449 is about 1760.2157802973.

The spelling of 5453781449 in words is "five billion, four hundred fifty-three million, seven hundred eighty-one thousand, four hundred forty-nine".