8544505457 has 4 divisors (see below), whose sum is σ = 8588777700. Its totient is φ = 8500233216.

The previous prime is 8544505441. The next prime is 8544505469. The reversal of 8544505457 is 7545054458.

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 1720258576 + 6824246881 = 41476^2 + 82609^2 .

It is a cyclic number.

It is not a de Polignac number, because 8544505457 - 2⁴ = 8544505441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8544505427) 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, 22135832 + ... + 22136217.

It is an arithmetic number, because the mean of its divisors is an integer number (2147194425).

Almost surely, 2^8544505457 is an apocalyptic number.

It is an amenable number.

8544505457 is a deficient number, since it is larger than the sum of its proper divisors (44272243).

8544505457 is a wasteful number, since it uses less digits than its factorization.

8544505457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44272242.

The product of its (nonzero) digits is 2240000, while the sum is 47.

The square root of 8544505457 is about 92436.4941838449. The cubic root of 8544505457 is about 2044.3832332800.

The spelling of 8544505457 in words is "eight billion, five hundred forty-four million, five hundred five thousand, four hundred fifty-seven".