15514944481 has 15 divisors (see below), whose sum is σ = 16522953013. Its totient is φ = 14568420640.

The previous prime is 15514944463. The next prime is 15514944493. The reversal of 15514944481 is 18444941551.

It is a happy number.

The square root of 15514944481 is 124559.

It is a perfect power (a square), and thus also a powerful number.

15514944481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4815110881 + 10699833600 = 69391^2 + 103440^2 .

It is not a de Polignac number, because 15514944481 - 2¹¹ = 15514942433 is a prime.

It is a super-2 number, since 2×15514944481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15515944481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 35997336 + ... + 35997766.

Almost surely, 2^15514944481 is an apocalyptic number.

15514944481 is the 124559-th square number.

15514944481 is the 62280-th centered octagonal number.

It is an amenable number.

15514944481 is a deficient number, since it is larger than the sum of its proper divisors (1008008532).

15514944481 is an frugal number, since it uses more digits than its factorization.

15514944481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930 (or 448 counting only the distinct ones).

The product of its digits is 460800, while the sum is 46.

The spelling of 15514944481 in words is "fifteen billion, five hundred fourteen million, nine hundred forty-four thousand, four hundred eighty-one".