5515151443 has 4 divisors (see below), whose sum is σ = 5515575208. Its totient is φ = 5514727680.

The previous prime is 5515151423. The next prime is 5515151519. The reversal of 5515151443 is 3441515155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5515151443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5515151399 and 5515151408.

It is not an unprimeable number, because it can be changed into a prime (5515151423) 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, 191721 + ... + 218602.

It is an arithmetic number, because the mean of its divisors is an integer number (1378893802).

Almost surely, 2^5515151443 is an apocalyptic number.

5515151443 is a deficient number, since it is larger than the sum of its proper divisors (423765).

5515151443 is a wasteful number, since it uses less digits than its factorization.

5515151443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423764.

The product of its digits is 30000, while the sum is 34.

The square root of 5515151443 is about 74264.0656239611. The cubic root of 5515151443 is about 1766.7935867086.

Adding to 5515151443 its reverse (3441515155), we get a palindrome (8956666598).

The spelling of 5515151443 in words is "five billion, five hundred fifteen million, one hundred fifty-one thousand, four hundred forty-three".