6614454521 has 4 divisors (see below), whose sum is σ = 6675137700. Its totient is φ = 6553771344.

The previous prime is 6614454487. The next prime is 6614454523. The reversal of 6614454521 is 1254544166.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1254544166 = 2 ⋅627272083.

It can be written as a sum of positive squares in 2 ways, for example, as 4547479225 + 2066975296 = 67435^2 + 45464^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6614454521 is a prime.

It is a super-2 number, since 2×6614454521² = 87502017220754678882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6614454523) 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, 30341426 + ... + 30341643.

It is an arithmetic number, because the mean of its divisors is an integer number (1668784425).

Almost surely, 2^6614454521 is an apocalyptic number.

It is an amenable number.

6614454521 is a deficient number, since it is larger than the sum of its proper divisors (60683179).

6614454521 is a wasteful number, since it uses less digits than its factorization.

6614454521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60683178.

The product of its digits is 115200, while the sum is 38.

The square root of 6614454521 is about 81329.2968185512. The cubic root of 6614454521 is about 1877.1458238076.

Adding to 6614454521 its reverse (1254544166), we get a palindrome (7868998687).

The spelling of 6614454521 in words is "six billion, six hundred fourteen million, four hundred fifty-four thousand, five hundred twenty-one".