5515151444 has 36 divisors (see below), whose sum is σ = 10974534900. Its totient is φ = 2420436480.

The previous prime is 5515151423. The next prime is 5515151519. The reversal of 5515151444 is 4441515155.

It can be written as a sum of positive squares in 2 ways, for example, as 4440623044 + 1074528400 = 66638^2 + 32780^2 .

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 182429 + ... + 210500.

Almost surely, 2^5515151444 is an apocalyptic number.

It is an amenable number.

5515151444 is a deficient number, since it is larger than the sum of its proper divisors (5459383456).

5515151444 is a wasteful number, since it uses less digits than its factorization.

5515151444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392984 (or 392971 counting only the distinct ones).

The product of its digits is 40000, while the sum is 35.

The square root of 5515151444 is about 74264.0656306938. The cubic root of 5515151444 is about 1766.7935868153.

Adding to 5515151444 its reverse (4441515155), we get a palindrome (9956666599).

The spelling of 5515151444 in words is "five billion, five hundred fifteen million, one hundred fifty-one thousand, four hundred forty-four".